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Lamarckism
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{{good article}}Lamarckism (or Lamarckian inheritance) is the hypothesis that an organism can pass on characteristics that it has acquired through use or disuse during its lifetime to its offspring. It is also known as the inheritance of acquired characteristics or soft inheritance. It is inaccurately named after the French biologist Jean-Baptiste Lamarck (1744–1829), who incorporated the action of soft inheritance into his evolutionary theories as a supplement to his concept of orthogenesis, a drive towards complexity. The theory is cited in textbooks to contrast with Darwinism. This paints a false picture of the history of biology, as Lamarck did not originate the idea of soft inheritance, which was known from the classical era onwards, and it was not the primary focus of Lamarck's theory of evolution. Further, in On the Origin of Species (1859), Charles Darwin supported the idea of "use and disuse inheritance", though rejecting other aspects of Lamarck's theory.Many researchers from the 1860s onwards attempted to find evidence for the theory, but these have all been explained away either by other mechanisms such as genetic contamination, or as fraud. Later, Mendelian genetics supplanted the notion of inheritance of acquired traits, eventually leading to the development of the modern synthesis, and the general abandonment of the Lamarckism in biology. Despite this, interest in Lamarckism has continued.Studies in the field of epigenetics and somatic hypermutation have highlighted the possible inheritance of behavioral traits acquired by the previous generation.JOURNAL, Roth, Tania L., Lubin, Farah D., Funk, Adam J., Sweatt, J. David, 3, May 2009, Lasting Epigenetic Influence of Early-Life Adversity on the BDNF Gene, Biological Psychiatry, 65, 9, 760–769, 10.1016/j.biopsych.2008.11.028, 3056389, 19150054, JOURNAL, Transgenerational Rescue of a Genetic Defect in Long-Term Potentiation and Memory Formation by Juvenile Enrichment, February 4, 2009, Arai, Junko A., Shaomin Li, Hartley, Dean M., Feig, Larry A., 3, The Journal of Neuroscience, 29, 5, 1496–1502, 10.1523/JNEUROSCI.5057-08.2009, 3408235, 19193896, JOURNAL, Hackett, Jamie A., Sengupta, Roopsha, Zylicz, Jan J., Murakami, Kazuhiro, Lee, Caroline, Down, Thomas A., Surani, M. Azim, 3, January 25, 2013, Germline DNA Demethylation Dynamics and Imprint Erasure Through 5-Hydroxymethylcytosine, Science, 339, 6118, 448–452, 10.1126/science.1229277, 23223451, 2013Sci...339..448H, 3847602, JOURNAL, Bonduriansky, Russell, June 2012, Rethinking heredity, again, Trends in Ecology & Evolution, 27, 6, 330–336, 10.1016/j.tree.2012.02.003, 22445060, JOURNAL, Skinner, Michael K., Michael Skinner (biologist), May 2015, Environmental Epigenetics and a Unified Theory of the Molecular Aspects of Evolution: A Neo-Lamarckian Concept that Facilitates Neo-Darwinian Evolution, Genome Biology and Evolution, 7, 5, 1296–1302, 10.1093/gbe/evv073, 4453068, 25917417, These remain controversial, not least because historians of science have asserted that it is inaccurate to describe transgenerational epigenetic inheritance as a form of Lamarckism.WEB,weblink Lamarck didn't say it, Darwin did, Gregory, T. Ryan, T. Ryan Gregory, March 8, 2009, Genomicron, Blog, 2015-11-04, {{harvnb|Wilkins|2009|pp=295–315}}JOURNAL, Burkhardt, Richard W., Jr., August 2013, Lamarck, Evolution, and the Inheritance of Acquired Characters, Genetics, 194, 4, 793–805, 10.1534/genetics.113.151852, 3730912, 23908372, JOURNAL, Penny, David, June 2015, Epigenetics, Darwin, and Lamarck, Genome Biology and Evolution, 7, 6, 1758–1760, 10.1093/gbe/evv107, 4494054, 26026157, The inheritance of the hologenome, consisting of the genomes of all an organism's symbiotic microbes as well as its own genome, is also somewhat Lamarckian in effect, though entirely Darwinian in its mechanisms.

Early history

Origins

File:Jean-baptiste lamarck2.jpg|thumb|Jean-Baptiste LamarckJean-Baptiste LamarckThe inheritance of acquired characteristics was proposed in ancient times, and remained a current idea for many centuries. The historian of science Conway Zirkle wrote in 1935 that:}}Zirkle noted that Hippocrates described pangenesis, the theory that what is inherited derives from the whole body of the parent, whereas Aristotle thought it impossible; but that all the same, Aristotle implicitly agreed to the inheritance of acquired characteristics, giving the example of the inheritance of a scar, or of blindness, though noting that children do not always resemble their parents. Zirkle recorded that Pliny the Elder thought much the same. Zirkle also pointed out that stories involving the idea of inheritance of acquired characteristics appear numerous times in ancient mythology and the Bible, and persisted through to Rudyard Kipling's Just So Stories. Erasmus Darwin's Zoonomia (c. 1795) suggested that warm-blooded animals develop from "one living filament... with the power of acquiring new parts" in response to stimuli, with each round of "improvements" being inherited by successive generations.{{harvnb|Darwin|1794–1796|loc=Vol I, section XXXIX}}

Darwin's pangenesis

File:Darwin's Pangenesis.svg|thumb|upright=1.5|Charles Darwin's pangenesis theory. Every part of the body emits tiny gemmules which migrate to the gonadgonadCharles Darwin's On the Origin of Species proposed natural selection as the main mechanism for development of species, but did not rule out a variant of Lamarckism as a supplementary mechanism.{{harvnb|Desmond|Moore|1991|p=617}}: "But Darwin was {{sic|hide=y|loath}} to let go of the notion that a well-used and strengthened organ could be inherited." Darwin called this pangenesis, and explained it in the final chapter of his book The Variation of Animals and Plants under Domestication (1868), after describing numerous examples to demonstrate what he considered to be the inheritance of acquired characteristics. Pangenesis, which he emphasised was a hypothesis, was based on the idea that somatic cells would, in response to environmental stimulation (use and disuse), throw off 'gemmules' or 'pangenes' which travelled around the body, though not necessarily in the bloodstream. These pangenes were microscopic particles that supposedly contained information about the characteristics of their parent cell, and Darwin believed that they eventually accumulated in the germ cells where they could pass on to the next generation the newly acquired characteristics of the parents.JOURNAL, Darwin, Charles, Charles Darwin, April 27, 1871, Pangenesis, Nature, 3, 78, 502–503, 1871Natur...3..502D, 10.1038/003502a0, JOURNAL, Holterhoff, Kate, 2014, The History and Reception of Charles Darwin's Hypothesis of Pangenesis, Journal of the History of Biology, 47, 4, 661–695, 10.1007/s10739-014-9377-0, Darwin's half-cousin, Francis Galton, carried out experiments on rabbits, with Darwin's cooperation, in which he transfused the blood of one variety of rabbit into another variety in the expectation that its offspring would show some characteristics of the first. They did not, and Galton declared that he had disproved Darwin's hypothesis of pangenesis, but Darwin objected, in a letter to the scientific journal Nature, that he had done nothing of the sort, since he had never mentioned blood in his writings. He pointed out that he regarded pangenesis as occurring in protozoa and plants, which have no blood, as well as in animals.JOURNAL, Liu, Yongsheng, 2008, A new perspective on Darwin's Pangenesis, Biological Reviews, 83, 2, 141–149, 10.1111/j.1469-185x.2008.00036.x, 18429766,

Lamarck's evolutionary framework

File:Lamarck's Two-Factor Theory.svg|thumb|upright=1.7|Lamarck's two-factor theory involves 1) a complexifying force that drives animal body plans towards higher levels (orthogenesis) creating a ladder of phyla, and 2) an adaptive force that causes animals with a given body plan to adapt to circumstances (use and disuse, inheritance of acquired characteristics), creating a diversity of species and genera. Popular views of Lamarckism only consider an aspect of the adaptive force.]]{{further|Jean-Baptiste Lamarck#Lamarckian evolution}}Between 1800 and 1830, Lamarck proposed a systematic theoretical framework for understanding evolution. He saw evolution as comprising four laws:BOOK, Larson, Edward J., 2004, A Growing sense of progress, Evolution: The remarkable history of a Scientific Theory, Modern Library, 38–41, BOOK, Gould, Stephen, The lying stones of Marrakech : penultimate reflections in natural history, Vintage, 2001, 978-0-09-928583-0, 119–121,
  1. "Life by its own force, tends to increase the volume of all organs which possess the force of life, and the force of life extends the dimensions of those parts up to a extent that those parts bring to themselves;"
  2. "The production of a new organ in an animal body, results from a new requirement arising. and which continues to make itself felt, and a new movement which that requirement gives birth to, and its upkeep/maintenance;"
  3. "The development of the organs, and their ability, are constantly a result of the use of those organs."
  4. "All that has been acquired, traced, or changed, in the physiology of individuals, during their life, is conserved through the genesis, reproduction, and transmitted to new individuals who are related to those who have undergone those changes."

Lamarck's discussion of heredity

In 1830, in an aside from his evolutionary framework, Lamarck briefly mentioned two traditional ideas in his discussion of heredity, in his day considered to be generally true. The first was the idea of use versus disuse; he theorized that individuals lose characteristics they do not require, or use, and develop characteristics that are useful. The second was to argue that the acquired traits were heritable. He gave as an imagined illustration the idea that when giraffes stretch their necks to reach leaves high in trees, they would strengthen and gradually lengthen their necks. These giraffes would then have offspring with slightly longer necks. In the same way, he argued, a blacksmith, through his work, strengthens the muscles in his arms, and thus his sons would have similar muscular development when they mature. Lamarck stated the following two laws:
  1. Première Loi: Dans tout animal qui n' a point dépassé le terme de ses développemens, l' emploi plus fréquent et soutenu d' un organe quelconque, fortifie peu à peu cet organe, le développe, l' agrandit, et lui donne une puissance proportionnée à la durée de cet emploi ; tandis que le défaut constant d' usage de tel organe, l'affoiblit insensiblement, le détériore, diminue progressivement ses facultés, et finit par le faire disparoître.
  2. Deuxième Loi: Tout ce que la nature a fait acquérir ou perdre aux individus par l' influence des circonstances où leur race se trouve depuis long-temps exposée, et, par conséquent, par l' influence de l' emploi prédominant de tel organe, ou par celle d' un défaut constant d' usage de telle partie ; elle le conserve par la génération aux nouveaux individus qui en proviennent, pourvu que les changemens acquis soient communs aux deux sexes, ou à ceux qui ont produit ces nouveaux individus.{{harvnb|Lamarck|1830|loc=p. 235}}
English translation:
  1. First Law [Use and Disuse]: In every animal which has not passed the limit of its development, a more frequent and continuous use of any organ gradually strengthens, develops and enlarges that organ, and gives it a power proportional to the length of time it has been so used; while the permanent disuse of any organ imperceptibly weakens and deteriorates it, and progressively diminishes its functional capacity, until it finally disappears.
  2. Second Law [Soft Inheritance]: All the acquisitions or losses wrought by nature on individuals, through the influence of the environment in which their race has long been placed, and hence through the influence of the predominant use or permanent disuse of any organ; all these are preserved by reproduction to the new individuals which arise, provided that the acquired modifications are common to both sexes, or at least to the individuals which produce the young.{{harvnb|Lamarck|1914|p=113}}
In essence, a change in the environment brings about change in "needs" (besoins), resulting in change in behavior, bringing change in organ usage and development, bringing change in form over time—and thus the gradual transmutation of the species. However, as the evolutionary biologists and historians of science Michael Ghiselin and Steven Jay Gould have pointed out, these ideas were not original to Lamarck.{{harvnb|Gould|2002}}

Weismann's experiment

File:Weismann's Germ Plasm.svg|thumb|upright=1.7|August Weismann's germ plasm theory. The hereditary material, the germ plasm, is confined to the gonads and the gametes. Somatic cells (of the body) develop afresh in each generation from the germ plasm, creating an invisible "Weismann barrierWeismann barrierThe idea that germline cells contain information that passes to each generation unaffected by experience and independent of the somatic (body) cells, came to be referred to as the Weismann barrier, as it would make Lamarckian inheritance from changes to the body difficult or impossible.BOOK, Romanes, George John, An examination of Weismannism, Open Court, 1893,weblink August Weismann conducted the experiment of removing the tails of 68 white mice, and those of their offspring over five generations, and reporting that no mice were born in consequence without a tail or even with a shorter tail. In 1889, he stated that "901 young were produced by five generations of artificially mutilated parents, and yet there was not a single example of a rudimentary tail or of any other abnormality in this organ."{{harvnb|Weismann|1889|loc="The Supposed Transmission of Mutilations" (1888), p. 432}} The experiment, and the theory behind it, were thought at the time to be a refutation of Lamarckism.However, the experiment's effectiveness in refuting Lamarck's hypothesis is doubtful, as it did not address the use and disuse of characteristics in response to the environment. The biologist Peter Gauthier noted in 1990 that:Can Weismann's experiment be considered a case of disuse? Lamarck proposed that when an organ was not used, it slowly, and very gradually atrophied. In time, over the course of many generations, it would gradually disappear as it was inherited in its modified form in each successive generation. Cutting the tails off mice does not seem to meet the qualifications of disuse, but rather falls in a category of accidental misuse... Lamarck's hypothesis has never been proven experimentally and there is no known mechanism to support the idea that somatic change, however acquired, can in some way induce a change in the germplasm. On the other hand it is difficult to disprove Lamarck's idea experimentally, and it seems that Weismann's experiment fails to provide the evidence to deny the Lamarckian hypothesis, since it lacks a key factor, namely the willful exertion of the animal in overcoming environmental obstacles.JOURNAL, Gauthier, Peter, March–May 1990, Does Weismann's Experiment Constitute a Refutation of the Lamarckian Hypothesis?, BIOS, 61, 1/2, 6–8, 4608123, The biologist and historian of science Michael Ghiselin also considered the Weismann tail-chopping experiment to have no bearing on the Lamarckian hypothesis, writing in 1994 that:The acquired characteristics that figured in Lamarck's thinking were changes that resulted from an individual's own drives and actions, not from the actions of external agents. Lamarck was not concerned with wounds, injuries or mutilations, and nothing that Lamarck had set forth was tested or "disproven" by the Weismann tail-chopping experiment.

Textbook Lamarckism

File:Giraffe feeding, Tanzania.jpg|thumb|The long neck of the giraffegiraffeThe identification of Lamarckism with the inheritance of acquired characteristics is regarded by evolutionary biologists including Michael Ghiselin as a falsified artifact of the subsequent history of evolutionary thought, repeated in textbooks without analysis, and wrongly contrasted with a falsified picture of Darwin's thinking. Ghiselin notes that "Darwin accepted the inheritance of acquired characteristics, just as Lamarck did, and Darwin even thought that there was some experimental evidence to support it."JOURNAL, Ghiselin, Michael T., The Imaginary Lamarck: A Look at Bogus "History" in Schoolbooks,weblink The Textbook Letter, September–October 1994, 1994,weblink" title="web.archive.org/web/20001012042617weblink">weblink 12 October 2000, no, American paleontologist and historian of science Stephen Jay Gould wrote that in the late 19th century, evolutionists "re-read Lamarck, cast aside the guts of it ... and elevated one aspect of the mechanics—inheritance of acquired characters—to a central focus it never had for Lamarck himself."{{harvnb|Gould|1980|p=66}} He argued that "the restriction of 'Lamarckism' to this relatively small and non-distinctive corner of Lamarck's thought must be labelled as more than a misnomer, and truly a discredit to the memory of a man and his much more comprehensive system."{{harvnb|Gould|2002|pp=177–178}}MAGAZINE, Gould, Stephen Jay, Stephen Jay Gould, October 4, 1979, Another Look at Lamarck,weblink New Scientist, 84, 1175, 38–40, 2015-11-09,

Neo-Lamarckism

Context

{{further|Eclipse of Darwinism}}File:PSM V49 D527 Edward Drinker Cope.jpg|thumb|left|upright|Edward Drinker CopeEdward Drinker CopeThe period of the history of evolutionary thought between Darwin's death in the 1880s, and the foundation of population genetics in the 1920s and the beginnings of the modern evolutionary synthesis in the 1930s, is called the eclipse of Darwinism by some historians of science. During that time many scientists and philosophers accepted the reality of evolution but doubted whether natural selection was the main evolutionary mechanism.{{harvnb|Quammen|2006|p=216}}Among the most popular alternatives were theories involving the inheritance of characteristics acquired during an organism's lifetime. Scientists who felt that such Lamarckian mechanisms were the key to evolution were called neo-Lamarckians. They included the British botanist George Henslow (1835–1925), who studied the effects of environmental stress on the growth of plants, in the belief that such environmentally-induced variation might explain much of plant evolution, and the American entomologist Alpheus Spring Packard, Jr., who studied blind animals living in caves and wrote a book in 1901 about Lamarck and his work.{{harvnb|Bowler|2003|pp=236–244}}{{harvnb|Quammen|2006|pp=218, 220}} Also included were paleontologists like Edward Drinker Cope and Alpheus Hyatt, who observed that the fossil record showed orderly, almost linear, patterns of development that they felt were better explained by Lamarckian mechanisms than by natural selection. Some people, including Cope and the Darwin critic Samuel Butler, felt that inheritance of acquired characteristics would let organisms shape their own evolution, since organisms that acquired new habits would change the use patterns of their organs, which would kick-start Lamarckian evolution. They considered this philosophically superior to Darwin's mechanism of random variation acted on by selective pressures. Lamarckism also appealed to those, like the philosopher Herbert Spencer and the German anatomist Ernst Haeckel, who saw evolution as an inherently progressive process. The German zoologist Theodor Eimer combined Larmarckism with ideas about orthogenesis, the idea that evolution is directed towards a goal.{{harvnb|Quammen|2006|p=221}}With the development of the modern synthesis of the theory of evolution, and a lack of evidence for a mechanism for acquiring and passing on new characteristics, or even their heritability, Lamarckism largely fell from favour. Unlike neo-Darwinism, neo-Lamarckism is a loose grouping of largely heterodox theories and mechanisms that emerged after Lamarck's time, rather than a coherent body of theoretical work.BOOK, Evolution: The History of an Idea, Bowler, Peter J., University of California Press, 1989, 1983, Revised, 978-0520063860, 257, 264, 279–280,

19th century

File:Charles-Édouard Brown-Séquard.jpg|thumb|upright|Charles-Édouard Brown-Séquard tried to demonstrate Lamarckism by mutilating guinea pigguinea pigNeo-Lamarckian versions of evolution were widespread in the late 19th century. The idea that living things could to some degree choose the characteristics that would be inherited allowed them to be in charge of their own destiny as opposed to the Darwinian view, which placed them at the mercy of the environment. Such ideas were more popular than natural selection in the late 19th century as it made it possible for biological evolution to fit into a framework of a divine or naturally willed plan, thus the neo-Lamarckian view of evolution was often advocated by proponents of orthogenesis.{{harvnb|Bowler|1992}} According to the historian of science Peter J. Bowler, writing in 2003:{{blockquote|One of the most emotionally compelling arguments used by the neo-Lamarckians of the late nineteenth century was the claim that Darwinism was a mechanistic theory which reduced living things to puppets driven by heredity. The selection theory made life into a game of Russian roulette, where life or death was predetermined by the genes one inherited. The individual could do nothing to mitigate bad heredity. Lamarckism, in contrast, allowed the individual to choose a new habit when faced with an environmental challenge and shape the whole future course of evolution.{{harvnb|Bowler|2003|p=367}}}}{{anchor|Experiments}}Scientists from the 1860s onwards conducted numerous experiments that purported to show Lamarckian inheritance. Some examples are described in the table.{| class="wikitable"|+ 19th century experiments attempting to demonstrate Lamarckian inheritance! Scientist !! Date !! Experiment !! Claimed result !! Rebuttal
Charles-Édouard Brown-Séquard >sciatic nerve and dorsal spinal cord of guinea pigs, causing abnormal nervous condition resembling epilepsy >use and disuse in response to environment; results could not be replicated; cause possibly a transmitted disease.{{harvnb>Mumfordp=209}}{{harvnb1956Burkhardtp=166}}{{harvnb2012Linville1906108}}{{harvnb>Aminoffp=192}}
Gaston Bonnier >Genetic pollution>genetic contamination{{harvnb2002|p=167}}
Joseph Thomas Cunningham >AUTHORLINK=JOSEPH THOMAS CUNNINGHAM TITLE=AN EXPERIMENT CONCERNING THE ABSENCE OF COLOR FROM THE LOWER SIDES OF FLAT-FISHES VOLUME=14 TITLE=RESEARCHES ON THE COLORATION OF THE SKINS OF FLAT FISHES JOURNAL=JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM ISSUE=1 DOI=10.1017/S0025315400049596, CUNNINGHAM >FIRST=JOSEPH THOMAS DATE=MAY 1895 VOLUME=4 DOI=10.1017/S0025315400050761DATE=SEPTEMBER 15, 1928 URL=HTTP://ARCHIVE.SPECTATOR.CO.UK/ARTICLE/15TH-SEPTEMBER-1928/25/THE-NEW-VIEW-OF-MENDELISM THE SPECTATOR >TYPE=BOOK REVIEW ISSUE=5229 ACCESSDATE=2015-10-24, Review of Modern Biology (1928) by J. T. Cunningham.{{harvnbForsdykepp=132–133}}{{harvnb1903|pp=257–259}}
Max Standfuss) 1892 to 1917 Raise butterflies at low temperature Variations in offspring even without low temperature Richard Goldschmidt agreed; Ernst Mayr "difficult to interpret".{{harvnb1940#Mayr & Provine 1998>Burkhardt 1998, "Lamarckism in Britain and the United States", p. 348{{harvnb1934AUTHORLINK=ALPHEUS SPRING PACKARD TITLE=HANDBUCH DER PALäARKTISCHEN GROSS-SCHMETTERLINGE FüR FORSCHER UND SAMMLER. ZWEITE GäNZLICH UMGEARBEITETE UND DURCH STUDIEN ZUR DESCENDENZTHEORIE ERWEITETE AUFLAGE, ETC JOURNAL=SCIENCE VOLUME=4 PAGES=52–54 Handbuch der paläarktischen Gross-Schmetterlinge für Forscher und Sammler (1896) by (:de:Max Standfuß>Maximilian Rudolph Standfuss).

Early 20th century

File:Paul Kammerer.jpg|thumb|upright|Paul Kammerer claimed in the 1920s to have found evidence for Lamarckian inheritance in midwife toads, in a case celebrated by the journalist Arthur KoestlerArthur KoestlerA century after Lamarck, scientists and philosophers continued to seek mechanisms and evidence for the inheritance of acquired characteristics. Experiments were sometimes reported as successful, but from the beginning these were either criticised on scientific grounds or shown to be fakes.{{harvnb|Delage|Goldsmith|1912|p=210}}{{harvnb|Kohler|2002|pp=202–204}}{{harvnb|Mitman|1992|p=219}}{{harvnb|Bowler|2003|pp=245–246}}{{harvnb|Medawar|1985|p=168}} For instance, in 1906, the philosopher Eugenio Rignano argued for a version that he called "centro-epigenesis",{{harvnb|Rignano|1906}}{{harvnb|Rignano|Harvey|1911}}JOURNAL, Eastwood, M. Lightfoot, October 1912, Reviewed Work: Eugenio Rignano Upon the Inheritance of Acquired Characters by C.H. Harvey, International Journal of Ethics, 23, 117–118, 1, 2377122, 10.1086/206715, {{harvnb|Newman|1921|p=335}}{{harvnb|Rignano|1926}}JOURNAL, Carmichael, Leonard, Leonard Carmichael, December 23, 1926, Reviewed Work: Biological Memory by Eugenio Rignano, E. W. MacBride, The Journal of Philosophy, 23, 26, 718–720, 2014451, 10.2307/2014451, but it was rejected by most scientists.JOURNAL, August 8, 1912, (1) Upon the Inheritance of Acquired Characters (2) Biological Aspects of Human Problems, Nature, Book review, 89, 2232, 576–578, 10.1038/089576a0, 1912Natur..89..576., Some of the experimental approaches are described in the table.{| class="wikitable"|+ Early 20th century experiments attempting to demonstrate Lamarckian inheritance! Scientist !! Date !! Experiment !! Claimed result !! Rebuttal
William Lawrence Tower >Colorado potato beetles in extreme humidity, temperature >William Bateson; Tower claimed all results lost in fire; William E. Castle visited laboratory, found fire suspicious, doubted claim that steam leak had killed all beetles, concluded faked data.BATESON AUTHORLINK=WILLIAM BATESON TITLE=DR. KAMMERER'S TESTIMONY TO THE INHERITANCE OF ACQUIRED CHARACTERS TYPE=LETTER TO EDITOR ISSUE=2592 DOI=10.1038/103344B0 Batesonpp=219–227}}Weinstein 1998, "A Note on W. L. Tower's Lepinotarsa Work," pp. 352–353
Gustav Tornier >Osmosis>osmotic effectMACBRIDE >FIRST=ERNEST DATE=JANUARY 1924 JOURNAL=THE EUGENICS REVIEW ISSUE=4 PMC=2942563 Cunninghampp=84–97}}SLADDEN >FIRST=DOROTHY E. TITLE=EXPERIMENTAL DISTORTION OF DEVELOPMENT IN AMPHIBIAN TADPOLES VOLUME=106 PAGES=318–325 DATE=NOVEMBER 1932 JOURNAL=PROCEEDINGS OF THE ROYAL SOCIETY B ISSUE=774 DOI=10.1098/RSPB.1932.0072,
Charles Rupert Stockard >alcohol intoxication of pregnant guinea pigs >Raymond Pearl unable to reproduce findings in chickens; Darwinian explanation{{harvnb>Blumbergpp=69–70}}
Francis Bertody Sumner >Youngp=249}}{{harvnb1945|pp=146–173}}
Michael F. Guyer, Elizabeth A. Smith >AUTHORLINK1=MICHAEL F. GUYER FIRST2=E. A. TITLE=TRANSMISSION OF EYE-DEFECTS INDUCED IN RABBITS BY MEANS OF LENS-SENSITIZED FOWL-SERUM VOLUME=6 PAGES=134–136 DOI=10.1073/PNAS.6.3.134 PMID=16576477, {{harvnb1985|p=169}}
Paul Kammerer >Midwife toad >Arthur Koestler arguing that opposition was political{{harvnb>Moorep=330}}
William McDougall (psychologist)>William McDougall 1920s Rats solving T-maze >experimental controlsMCDOUGALL AUTHORLINK=WILLIAM MCDOUGALL (PSYCHOLOGIST) TITLE=FOURTH REPORT ON A LAMARCKIAN EXPERIMENT JOURNAL=BRITISH JOURNAL OF PSYCHOLOGY ISSUE=4 DOI=10.1111/J.2044-8295.1938.TB00882.X, PANTIN >FIRST=CARL F. A. DATE=NOVEMBER 1957 JOURNAL=BIOGRAPHICAL MEMOIRS OF FELLOWS OF THE ROYAL SOCIETY PAGES=247–255 AUTHORLINK1=WILFRED EADE AGAR FIRST2=FRANK H. FIRST3=OSCAR W. DATE=JULY 1935 URL=HTTP://JEB.BIOLOGISTS.ORG/CONTENT/12/3/191.SHORT VOLUME=12 PAGES=191–211, AGAR >FIRST1=WILFRED E. FIRST2=FRANK H. FIRST3=OSCAR W. TITLE=SECOND REPORT ON A TEST OF MCDOUGALL'S LAMARCKIAN EXPERIMENT ON THE TRAINING OF RATS JOURNAL=THE JOURNAL OF EXPERIMENTAL BIOLOGY ISSUE=2 LAST2=DRUMMOND LAST3=TIEGS DATE=JUNE 1948 URL=HTTP://JEB.BIOLOGISTS.ORG/CONTENT/25/2/103.SHORT VOLUME=25 PAGES=103–122 LAST2=DRUMMOND LAST3=TIEGS LAST4=GUNSON DATE=SEPTEMBER 1954 URL=HTTP://JEB.BIOLOGISTS.ORG/CONTENT/31/3/307.SHORT VOLUME=31 PAGES=308–321,
John William Heslop-Harrison >Peppered moths exposed to soot >mutations caused by soot >Reproducibility>replicate results; implausible mutation rate{{harvnb2002R. A. Fisher pointed out that Harrison's hypothesis required a mutation rate far higher than any previously reported."{{harvnb>Moore2008|p=203}}
Ivan Pavlov >Conditioned reflex in mice to food and bell >McDougallp=180}}MACDOWELL >FIRST=E. CARLETON FIRST2=EMILIA M. TITLE=ALCOHOLISM AND THE BEHAVIOR OF WHITE RATS. I. THE INFLUENCE OF ALCOHOLIC GRANDPARENTS UPON MAZE-BEHAVIOR VOLUME=33 PAGES=208–291, 10.1002/jez.1400330107,
Coleman Griffith, John Detlefson >AUTHORLINK=COLEMAN GRIFFITH TITLE=THE EFFECT UPON THE WHITE RAT OF CONTINUED BODILY ROTATION VOLUME=54 PAGES=524–534 DOI=10.1086/279783, GRIFFITH >FIRST1=COLEMAN R. TITLE=ARE PERMANENT DISTURBANCES OF EQUILIBRATION INHERITED? VOLUME=56 PAGES=676–678 PMID=17778266YEAR=1923 JOURNAL=PROCEEDINGS OF THE AMERICAN PHILOSOPHICAL SOCIETY ISSUE=5 JSTOR=984462, DETLEFSEN >FIRST=JOHN A. TITLE=THE INHERITANCE OF ACQUIRED CHARACTERS JOURNAL=PHYSIOLOGICAL REVIEWS NUMBER=2 DATE=JUNE 1933 JOURNAL=JOURNAL OF COMPARATIVE PSYCHOLOGY ISSUE=3 DOI=10.1037/H0074715, {{harvnb1940|p=162}}
Victor JollosDrosophila melanogaster >Directed mutagenesis, a form of orthogenesis >AUTHORLINK=:PL:VICTOR JOLLOS TITLE=INHERITED CHANGES PRODUCED BY HEAT-TREATMENT IN DROSOPHILA MELANOGASTER VOLUME=16 PAGES=476–494 Harwoodpp=121–131}}

Late 20th century

The British anthropologist Frederic Wood Jones and the South African paleontologist Robert Broom supported a neo-Lamarckian view of human evolution. The German anthropologist Hermann Klaatsch relied on a neo-Lamarckian model of evolution to try and explain the origin of bipedalism. Neo-Lamarckism remained influential in biology until the 1940s when the role of natural selection was reasserted in evolution as part of the modern evolutionary synthesis.{{harvnb|Wood|2013}}Herbert Graham Cannon, a British zoologist, defended Lamarckism in his 1959 book Lamarck and Modern Genetics.{{harvnb|Cannon|1975}} In the 1960s, "biochemical Lamarckism" was advocated by the embryologist Paul Wintrebert.{{harvnb|Boesiger|1974|p=29}}Neo-Lamarckism was dominant in French biology for more than a century. French scientists who supported neo-Lamarckism included Edmond Perrier (1844–1921), Alfred Giard (1846–1908), Gaston Bonnier (1853–1922) and Pierre-Paul Grassé (1895–1985). They followed two traditions, one mechanistic, one vitalistic after Henri Bergson's philosophy of evolution.JOURNAL, Loison, Laurent, November 2011, French Roots of French Neo-Lamarckisms, 1879–1985, Journal of the History of Biology, 44, 4, 713–744, 10.1007/s10739-010-9240-x, 20665089, In 1987, Ryuichi Matsuda coined the term "pan-environmentalism" for his evolutionary theory which he saw as a fusion of Darwinism with neo-Lamarckism. He held that heterochrony is a main mechanism for evolutionary change and that novelty in evolution can be generated by genetic assimilation.JOURNAL, Pearson, Roy Douglas, March 1988, Reviews, Acta Biotheoretica, Book review, 37, 1, 31–36, 10.1007/BF00050806, Book reviews of Animal Evolution in Changing Environments: With Special Reference to Abnormal Metamorphosis (1987) by Ryuichi Matsuda and The Evolution of Individuality (1987) by Leo W. Buss.JOURNAL, Shapiro, Arthur M., Arthur Shapiro (ecologist), 1988, Book Review: Animal Evolution in Changing Environments with Special Reference to Abnormal Metamorphosis,weblink Journal of the Lepidopterists' Society, Book review, 42, 2, 146–147, 2015-12-11, His views were criticized by Arthur M. Shapiro for providing no solid evidence for his theory. Shapiro noted that "Matsuda himself accepts too much at face value and is prone to wish-fulfilling interpretation."

Ideological neo-Lamarckism

File:Trofim Lysenko portrait.jpg|thumb|upright|Trofim Lysenko promoted an ideological form of neo-Lamarckism which adversely influenced Soviet agricultural policy in the 1930s.]]A form of Lamarckism was revived in the Soviet Union of the 1930s when Trofim Lysenko promoted the ideologically-driven research programme, Lysenkoism; this suited the ideological opposition of Joseph Stalin to genetics. Lysenkoism influenced Soviet agricultural policy which in turn was later blamed for crop failures.{{harvnb|Baird|Scerri|McIntyre|2006|p=166}}

Critique

George Gaylord Simpson in his book Tempo and Mode in Evolution (1944) claimed that experiments in heredity have failed to corroborate any Lamarckian process.{{harvnb|Simpson|1944|p=75}} Simpson noted that neo-Lamarckism "stresses a factor that Lamarck rejected: inheritance of direct effects of the environment" and neo-Lamarckism is closer to Darwin's pangenesis than Lamarck's views.{{harvnb|Simpson|1964|pp=14–60}} Simpson wrote, "the inheritance of acquired characters, failed to meet the tests of observation and has been almost universally discarded by biologists."{{harvnb|Simpson|1965|p=451}}Botanist Conway Zirkle pointed out that Lamarck did not originate the hypothesis that acquired characteristics could be inherited, so it is incorrect to refer to it as Lamarckism:What Lamarck really did was to accept the hypothesis that acquired characters were heritable, a notion which had been held almost universally for well over two thousand years and which his contemporaries accepted as a matter of course, and to assume that the results of such inheritance were cumulative from generation to generation, thus producing, in time, new species. His individual contribution to biological theory consisted in his application to the problem of the origin of species of the view that acquired characters were inherited and in showing that evolution could be inferred logically from the accepted biological hypotheses. He would doubtless have been greatly astonished to learn that a belief in the inheritance of acquired characters is now labeled "Lamarckian," although he would almost certainly have felt flattered if evolution itself had been so designated.JOURNAL, Zirkle, Conway, Conway Zirkle, January 1946, The Early History of the Idea of the Inheritance of Acquired Characters and of Pangenesis, Transactions of the American Philosophical Society, 35, 2, 91–151, 10.2307/1005592, 1005592, Peter Medawar wrote regarding Lamarckism, "very few professional biologists believe that anything of the kind occurs—or can occur—but the notion persists for a variety of nonscientific reasons." Medawar stated there is no known mechanism by which an adaptation acquired in an individual's lifetime can be imprinted on the genome and Lamarckian inheritance is not valid unless it excludes the possibility of natural selection but this has not been demonstrated in any experiment.{{harvnb|Medawar|1985|pp=166–169}}Martin Gardner wrote in his book Fads and Fallacies in the Name of Science (1957):A host of experiments have been designed to test Lamarckianism. All that have been verified have proved negative. On the other hand, tens of thousands of experiments— reported in the journals and carefully checked and rechecked by geneticists throughout the world— have established the correctness of the gene-mutation theory beyond all reasonable doubt... In spite of the rapidly increasing evidence for natural selection, Lamarck has never ceased to have loyal followers.... There is indeed a strong emotional appeal in the thought that every little effort an animal puts forth is somehow transmitted to his progeny.{{harvnb|Gardner|1957|pp=142–143}}According to Ernst Mayr, any Lamarckian theory involving the inheritance of acquired characters has been refuted as "DNA does not directly participate in the making of the phenotype and that the phenotype, in turn, does not control the composition of the DNA."{{harvnb|Mayr|1997|p=222}}: "...the recognition that DNA does not directly participate in the making of the phenotype and that the phenotype, in turn, does not control the composition of the DNA represents the ultimate invalidation of all theories involving the inheritance of acquired characters. This definitive refutation of Lamarck's theory of evolutionary causation clears the air." Peter J. Bowler has written that although many early scientists took Lamarckism seriously, it was discredited by genetics in the early twentieth century.{{harvnb|Bowler|2013|p=21}}

Mechanisms resembling Lamarckism

Transgenerational epigenetic inheritance

File:DNA methylation.jpg|thumb|DNA molecule with epigenetic marks, created by methylation, enabling a neo-Lamarckian pattern of inheritance for some generations.]]{{further|Transgenerational epigenetic inheritance|Contribution of epigenetic modifications to evolution}}Epigenetic inheritance has been argued by scientists including Eva Jablonka and Marion J. Lamb to be Lamarckian.{{harvnb|Jablonka|Lamb|1995}} Epigenetics is based on hereditary elements other than genes that pass into the germ cells. These include methylation patterns in DNA and chromatin marks on histone proteins, both involved in gene regulation. These marks are responsive to environmental stimuli, differentially affect gene expression, and are adaptive, with phenotypic effects that persist for some generations. The mechanism may also enable the inheritance of behavioral traits, for example in chickens{{harvnb|Moore|2015}}JOURNAL, Richards, Eric J., May 2006, Inherited epigenetic variation — revisiting soft inheritance, Nature Reviews Genetics, 7, 5, 395–401, 10.1038/nrg1834, 16534512, JOURNAL, Nätt, Daniel, Lindqvist, Niclas, Stranneheim, Henrik, Lundeberg, Joakim, Torjesen, Peter A., Jensen, Per, 3, July 28, 2009, Pizzari, Tom, Inheritance of Acquired Behaviour Adaptations and Brain Gene Expression in Chickens, PLOS ONE, 4, 7, e6405, 10.1371/journal.pone.0006405, 2713434, 19636381, 2009PLoSO...4.6405N, ratsJOURNAL, Sheau-Fang Ng, Lin, Ruby C. Y., Laybutt, D. Ross, Barres, Romain, Owens, Julie A., Morris, Margaret J., 3, October 21, 2010, Chronic high-fat diet in fathers programs β-cell dysfunction in female rat offspring, Nature, 467, 7318, 963–966, 10.1038/nature09491, 20962845, 2010Natur.467..963N, PRESS RELEASE, Gibson, Andrea, June 16, 2013, Obese male mice father offspring with higher levels of body fat,weblink Ohio University, 2015-11-02, and human populations that have experienced starvation, DNA methylation resulting in altered gene function in both the starved population and their offspring.JOURNAL, Lumey, Lambert H., Stein, Aryeh D., Ravelli, Anita C. J., July 1995, Timing of prenatal starvation in women and birth weight in their first and second born offspring: The Dutch famine birth cohort study, European Journal of Obstetrics & Gynecology and Reproductive Biology, 61, 1, 23–30, 10.1016/0028-2243(95)02149-M, {{INIST, 3596539, }} Methylation similarly mediates epigenetic inheritance in plants such as rice.JOURNAL, Akimoto, Keiko, Katakami, Hatsue, Hyun-Jung Kim, Ogawa, Emiko, Sano, Cecile M., Wada, Yuko, Sano, Hiroshi, 3, August 2007, Epigenetic Inheritance in Rice Plants, Annals of Botany, 100, 2, 205–217, 10.1093/aob/mcm110, 2735323, 17576658, JOURNAL, Sano, Hiroshi, Inheritance of acquired traits in plants: Reinstatement of Lamarck, April 2010, Plant Signaling & Behavior, 5, 4, 346–348, 10.4161/psb.5.4.10803, 2958583, 20118668, Small RNA molecules, too, may mediate inherited resistance to infection.JOURNAL, Singer, Emily, February 4, 2009, A Comeback for Lamarckian Evolution?,weblink MIT Technology Review, Biomedicine news, JOURNAL, Rechavi, Oded, Minevich, Gregory, Hobert, Oliver, Transgenerational Inheritance of an Acquired Small RNA-Based Antiviral Response in C. Elegans, December 9, 2011, Cell, 147, 6, 1248–1256, 10.1016/j.cell.2011.10.042, 3250924, 22119442, JOURNAL, Rechavi, O., Houri-Ze'evi, L., Anava, S., Goh, W.S., Kerk, S.Y., Hannon, G.J., Hobert, O., Starvation-induced transgenerational inheritance of small RNAs in C. elegans, Cell, 17 July 2014, 158, 2, 277–287, 25018105, 10.1016/j.cell.2014.06.020, 4377509, Handel and Romagopalan commented that "epigenetics allows the peaceful co-existence of Darwinian and Lamarckian evolution."JOURNAL, Handel, Adam E., Ramagopalan, Sreeram V., May 13, 2010, Is Lamarckian evolution relevant to medicine?, BMC Medical Genetics, 11, 73, 10.1186/1471-2350-11-73, 2876149, 20465829, Joseph Springer and Dennis Holley commented in 2013 that:Lamarck and his ideas were ridiculed and discredited. In a strange twist of fate, Lamarck may have the last laugh. Epigenetics, an emerging field of genetics, has shown that Lamarck may have been at least partially correct all along. It seems that reversible and heritable changes can occur without a change in DNA sequence (genotype) and that such changes may be induced spontaneously or in response to environmental factors—Lamarck's "acquired traits." Determining which observed phenotypes are genetically inherited and which are environmentally induced remains an important and ongoing part of the study of genetics, developmental biology, and medicine.{{harvnb|Springer|Holley|2013|p=94}}The prokaryotic CRISPR system and Piwi-interacting RNA could be classified as Lamarckian, within a Darwinian framework.JOURNAL, Koonin, Eugene V., Eugene Koonin, Wolf, Yuri I., November 11, 2009, Is evolution Darwinian or/and Lamarckian?, Biology Direct, 4, 42, 10.1186/1745-6150-4-42, 2781790, 19906303, However, the significance of epigenetics in evolution is uncertain. Critics such as the evolutionary biologist Jerry Coyne point out that epigenetic inheritance lasts for only a few generations, so it is not a stable basis for evolutionary change.WEB,weblink Epigenetics: the light and the way?, Coyne, Jerry, Jerry Coyne, October 24, 2010, Why Evolution Is True, Blog, 2015-11-04, WEB,weblink Epigenetics smackdown at the Guardian, Coyne, Jerry, September 23, 2013, Why Evolution is True, Blog, 2015-11-04, González-Recio O, Toro MA, Bach A. (2015). Past, present, and future of epigenetics applied to livestock breeding. Front Genet 6: 305.Varona L, Munilla S, Mouresan EF, González-Rodríguez A, Moreno C, Altarriba J. (2015). A Bayesian model for the analysis of transgenerational epigenetic variation. G3: Genes, Genomes, Genetics 5(4): 477-485.The evolutionary biologist T. Ryan Gregory contends that epigenetic inheritance should not be considered Lamarckian. According to Gregory, Lamarck did not claim that the environment directly affected living things. Instead, Lamarck "argued that the environment created needs to which organisms responded by using some features more and others less, that this resulted in those features being accentuated or attenuated, and that this difference was then inherited by offspring." Gregory has stated that Lamarckian evolution in epigenetics is more like Darwin's point of view than Lamarck's.In 2007, David Haig wrote that research into epigenetic processes does allow a Lamarckian element in evolution but the processes do not challenge the main tenets of the modern evolutionary synthesis as modern Lamarckians have claimed. Haig argued for the primacy of DNA and evolution of epigenetic switches by natural selection.JOURNAL, Haig, David, David Haig (biologist), June 2007, Weismann Rules! OK? Epigenetics and the Lamarckian temptation, Biology and Philosophy, 22, 3, 415–428, 10.1007/s10539-006-9033-y, Modern neo-Darwinists do not deny that epigenetic mechanisms play an important role during development nor do they deny that these mechanisms enable a variety of adaptive responses to the environment. Recurrent, predictable changes of epigenetic state provide a useful set of switches that allow genetically-identical cells to acquire differentiated functions and allow facultative responses of a genotype to environmental changes (provided that 'similar' changes have occurred repeatedly in the past). However, most neo-Darwinists would claim that the ability to adaptively switch epigenetic state is a property of the DNA sequence (in the sense that alternative sequences would show different switching behavior) and that any increase of adaptedness in the system has come about by a process of natural selection., Haig has written that there is a "visceral attraction" to Lamarckian evolution from the public and some scientists, as it posits the world with a meaning, in which organisms can shape their own evolutionary destiny.JOURNAL, Haig, David, November 2011, Lamarck Ascending!, Philosophy & Theory in Biology, Book essay, 3, e204, 10.3998/ptb.6959004.0003.004, "A Review of Transformations of Lamarckism: From Subtle Fluids to Molecular Biology, edited by Snait B. Gissis and Eva Jablonka, MIT Press, 2011"Thomas Dickens and Qazi Rahman (2012) have argued that epigenetic mechanisms such as DNA methylation and histone modification are genetically inherited under the control of natural selection and do not challenge the modern synthesis. They dispute the claims of Jablonka and Lamb on Lamarckian epigenetic processes.JOURNAL, Dickins, Thomas E., Rahman, Qazi, August 7, 2012, The extended evolutionary synthesis and the role of soft inheritance in evolution, Proceedings of the Royal Society B, 279, 1740, 2913–2921, 10.1098/rspb.2012.0273, 3385474, 22593110, File:Neo-Lamarckian somatic hypermutation and reverse transcription to germline.svg|thumb|upright=1.35|Edward J. Steele's disputed Neo-Lamarckian mechanism involves somatic hypermutation and reverse transcription by a retrovirus to breach the Weismann barrier to germline DNADNAIn 2015, Khursheed Iqbal and colleagues discovered that although "endocrine disruptors exert direct epigenetic effects in the exposed fetal germ cells, these are corrected by reprogramming events in the next generation."JOURNAL, Whitelaw, Emma, Emma Whitelaw, March 27, 2015, Disputing Lamarckian Epigenetic Inheritance in Mammals, Genome Biology, 16, 60, 60, 10.1186/s13059-015-0626-0, 4375926, 25853737, Also in 2015, Adam Weiss argued that bringing back Lamarck in the context of epigenetics is misleading, commenting, "We should remember [Lamarck] for the good he contributed to science, not for things that resemble his theory only superficially. Indeed, thinking of CRISPR and other phenomena as Lamarckian only obscures the simple and elegant way evolution really works."JOURNAL, Weiss, Adam, October 2015, Lamarckian Illusions, Trends in Ecology & Evolution, 30, 10, 566–568, 10.1016/j.tree.2015.08.003, 26411613,

Somatic hypermutation and reverse transcription to germline

In the 1970s, the Australian immunologist Edward J. Steele developed a neo-Lamarckian theory of somatic hypermutation within the immune system and coupled it to the reverse transcription of RNA derived from body cells to the DNA of germline cells. This reverse transcription process supposedly enabled characteristics or bodily changes acquired during a lifetime to be written back into the DNA and passed on to subsequent generations.JOURNAL, Steele, E.J., Somatic hypermutation in immunity and cancer: Critical analysis of strand-biased and codon-context mutation signatures, 2016, DNA Repair, 45, 1–24, 10.1016/j.dnarep.2016.07.001, 27449479, JOURNAL, Steele, E.J., Pollard, J.W., 1987, Hypothesis : Somatic Hypermutation by gene conversion via the error prone DNA-to-RNA-to-DNA information loop, Molecular Immunology, 24, 6, 667–673, 10.1016/j.dnarep.2016.07.001, 2443841, The mechanism was meant to explain why homologous DNA sequences from the VDJ gene regions of parent mice were found in their germ cells and seemed to persist in the offspring for a few generations. The mechanism involved the somatic selection and clonal amplification of newly acquired antibody gene sequences generated via somatic hypermutation in B-cells. The messenger RNA products of these somatically novel genes were captured by retroviruses endogenous to the B-cells and were then transported through the bloodstream where they could breach the Weismann or soma-germ barrier and reverse transcribe the newly acquired genes into the cells of the germ line, in the manner of Darwin's pangenes.BOOK, Somatic selection and adaptive evolution : on the inheritance of acquired characters, Steele, E. J., University of Chicago Press, 1981, 2nd, JOURNAL, Steele, E.J., 2016, Somatic hypermutation in immunity and cancer: Critical analysis of strand-biased and codon-context mutation signatures., DNA Repair, 45, 2016, 1–2 4, 10.1016/j.dnarep.2016.07.001, 27449479, {{harvnb|Steele|Lindley|Blanden|1998}}File:Neo-Lamarckian inheritance of hologenome.svg|thumb|upright=2.5|Neo-Lamarckian inheritance of hologenome ]]The historian of biology Peter J. Bowler noted in 1989 that other scientists had been unable to reproduce his results, and described the scientific consensus at the time:BOOK, Evolution: The History of an Idea, Bowler, Peter J., Peter J., University of California Press, 1989, 1983, Revised, 978-0520063860, 179, 341, Bowler commented that "[Steele's] work was bitterly criticized at the time by biologists who doubted his experimental results and rejected his hypothetical mechanism as implausible."

Hologenome theory of evolution

{{further|hologenome theory of evolution}}The hologenome theory of evolution, while Darwinian, has Lamarckian aspects. An individual animal or plant lives in symbiosis with many microorganisms, and together they have a "hologenome" consisting of all their genomes. The hologenome can vary like any other genome by mutation, sexual recombination, and chromosome rearrangement, but in addition it can vary when populations of microorganisms increase or decrease (resembling Lamarckian use and disuse), and when it gains new kinds of microorganism (resembling Lamarckian inheritance of acquired characteristics). These changes are then passed on to offspring.JOURNAL, Rosenberg, Eugene, Eugene Rosenberg, Sharon, Gill, Zilber-Rosenberg, Ilana, December 2009, The hologenome theory of evolution contains Lamarckian aspects within a Darwinian framework, Environmental Microbiology, 11, 12, 2959–2962, 10.1111/j.1462-2920.2009.01995.x, 19573132, The mechanism is largely uncontroversial, and natural selection does sometimes occur at whole system (hologenome) level, but it is not clear that this is always the case.JOURNAL, Moran, Nancy A., Nancy A. Moran, Sloan, Daniel B., The Hologenome Concept: Helpful or Hollow?, PLOS Biology, 13, 12, 2015-12-04, 10.1371/journal.pbio.1002311, 26636661, 4670207, e1002311, File:Lamarck Compared to Darwin, Baldwin, Waddington.svg|thumb|upright=2.5|Lamarckian use and disuse compared to Darwinian evolution, the Baldwin effect, and Waddington's genetic assimilationgenetic assimilation

Baldwin effect

{{further|Baldwin effect}}The Baldwin effect, named after the psychologist James Mark Baldwin by George Gaylord Simpson in 1953, proposes that the ability to learn new behaviours can improve an animal's reproductive success, and hence the course of natural selection on its genetic makeup. Simpson stated that the mechanism was "not inconsistent with the modern synthesis" of evolutionary theory,Depew, David J. (2003), "Baldwin Boosters, Baldwin Skeptics" in: BOOK, Evolution and learning: The Baldwin effect reconsidered, Weber, Bruce H., David J., Depew, 2003, MIT Press, 978-0-262-23229-6, 3–31,weblink though he doubted that it occurred very often, or could be proven to occur. He noted that the Baldwin effect provide a reconciliation between the neo-Darwinian and neo-Lamarckian approaches, something that the modern synthesis had seemed to render unnecessary. In particular, the effect allows animals to adapt to a new stress in the environment through behavioural changes, followed by genetic change. This somewhat resembles Lamarckism but without requiring animals to inherit characteristics acquired by their parents.JOURNAL, The Baldwin effect, George Gaylord Simpson, Simpson, George Gaylord, 1953, Evolution, 7, 2, 110–117, 10.2307/2405746, 2405746, The Baldwin effect is broadly accepted by Darwinists.Dennett, Daniel (2003), "The Baldwin Effect, a Crane, not a Skyhook" in: BOOK, Evolution and learning: The Baldwin effect reconsidered, Weber, Bruce H., David J., Depew, 2003, MIT Press, 978-0-262-23229-6, 69–106,weblink

In sociocultural evolution

Within the history of technology, Lamarckism has been used in linking cultural development to human evolution by classifying artefacts as extensions of human anatomy: in other words, as the acquired cultural characteristics of human beings. Ben Cullen has shown that a strong element of Lamarckism exists in sociocultural evolution.{{harvnb|Cullen|2000|pp=31–60}}{{-}}

References

{{Reflist|30em}}

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  • BOOK, Kohler, Robert E., 2002, Landscapes and Labscapes: Exploring the Lab-Field Border in Biology, University Of Chicago Press, 978-0-226-45010-0, 2002023331, 690162738, harv,
  • BOOK, Lamarck, Jean-Baptiste, Jean-Baptiste Lamarck, 1830, Originally published 1809; Paris: Dentu et L'Auteur, Philosophie Zoologique, French, New, Germer Baillière, 11003671, harv, Philosophie Zoologique, {{Internet Archive|id=philosophiezool02unkngoog|name=Philosophie zoologique (1830)}}
    • BOOK, Lamarck, Jean-Baptiste, 1914, Zoological Philosophy; An Exposition with Regard to the Natural History of Animals, Translated, with an introduction, by Hugh Elliot, Macmillan Publishers, Macmillan and Co., Ltd., a15000196, 1489850, harv, 2, {{Internet Archive|id=ZoologicalPhilosophy|name=Zoological philosophy (1914)}}
  • BOOK, Linville, Henry R., Kelly, Henry A., 1906, A Text-Book in General Zoölogy, Edwin Ginn, Ginn & Company, 06023318, 1041858, harv, {{Internet Archive|id=atextbookingene00kellgoog|name=A textbook in general zoölogy (1906)}}
  • BOOK, Mason, Stephen Finney, 1956, Main Currents of Scientific Thought: A History of the Sciences, The Life of Science Library, 32, Reprint, Abelard-Schuman, 732176237, harv,
  • BOOK, Mayr, Ernst, Ernst Mayr, 1997, Originally published 1976, Evolution and the Diversity of Life: Selected Essays, First Harvard University Press paperback, Belknap Press of Harvard University Press, 978-0-674-27105-0, 75042131, 247687824, harv,
  • BOOK, Mayr, Ernst, Provine, William B., Will Provine, 1998, The Evolutionary Synthesis: Perspectives on the Unification of Biology, New preface by Ernst Mayr, Harvard University Press, 978-0-674-27226-2, 98157613, 503188713, Mayr & Provine 1998,
  • BOOK, McDougall, William, 1934, Modern Materialism and Emergent Evolution, Methuen, harv,
  • BOOK, Medawar, Peter, Peter Medawar, 1985, Originally published 1983, Aristotle to Zoos: A Philosophical Dictionary of Biology, Oxford Paperbacks, Reprint, Harvard University Press, 978-0-19-283043-2, 84016529, 11030267, harv,
  • BOOK, Mitman, Gregg, 1992, The State of Nature: Ecology, Community, and American Social Thought, 1900–1950, Science and its Conceptual Foundations, University of Chicago Press, 978-0-226-53236-3, 91045638, 25130594, harv,
  • BOOK, Moore, David S., 2015, The Developing Genome: An Introduction to Behavioral Epigenetics, Oxford University Press, 978-0-19-992234-5, 2014049505, 894139943, harv,
  • BOOK, Moore, Randy, Decker, Mark D., 2008, More Than Darwin: An Encyclopedia of the People and Places of the Evolution-creationism Controversy, Greenwood Press, 978-0-313-34155-7, 2007044406, 177023758, harv,
  • BOOK, Moore, James R., 2002, Originally published 1989, History, Humanity and Evolution: Essays for John C. Greene, Cambridge University Press, 978-0-521-52478-0, 89032583, 49784849, harv,
  • BOOK, Morgan, Thomas Hunt, Thomas Hunt Morgan, 1903, Evolution and Adaptation, The Macmillan Company; Macmillan and Co., Ltd., 03027216, 758217701, harv, {{Internet Archive|id=cu31924024754347|name=Evolution and adaptation (1903)}}
  • BOOK, Mumford, Frederick Blackmar, 1921, Originally published 1917, The Breeding of Animals, The Rural Text-Book Series, Macmillan Publishers, The Macmillan Company, 17007834, 5429719, harv, {{Internet Archive|id=breedingofanimal00mumf|name=The breeding of animals (1921)}}
  • BOOK, Newman, Horatio Hackett, 1921, Readings in Evolution, Genetics, and Eugenics, University of Chicago Press, 21017204, 606993, harv, {{Internet Archive|id=readingsinevolu00newm|name=Readings in evolution, genetics, and eugenics (1921)}}
  • BOOK, Otho S. A. Sprague Memorial Institute, 1940, Studies from the Otho S. A. Sprague Memorial Institute: Collected Reprints, 25, Otho S. A. Sprague Memorial Institute, 605547177, harv,
  • BOOK, Quammen, David, David Quammen, 2006, The Reluctant Mr. Darwin: An Intimate Portrait of Charles Darwin and the Making of His Theory of Evolution, Great Discoveries, 1st, Atlas Books/Norton, 978-0-393-05981-6, 2006009864, 65400177, harv,
  • BOOK, Raitiere, Martin N., 2012, The Complicity of Friends: How George Eliot, G. H. Lewes, and John Hughlings-Jackson Encoded Herbert Spencer's Secret, Bucknell University Press, 978-1-61148-418-2, 2012030762, 806981125, harv,
  • BOOK, Rignano, Eugenio, Eugenio Rignano, 1906, Sur La Transmissibilité Des Caractères Acquis: Hypothèse D'une Centro-épigénèse, French, Félix Alcan, 5967582, harv,
    • BOOK, Rignano, Eugenio, Harvey, Basil C. H., 1911, Eugenio Rignano Upon the Inheritance of Acquired Characters: A Hypothesis of Heredity, Development, and Assimilation, Authorized English translation by Basil C. H. Harvey, Open Court Publishing Company, 11026509, 1311084, harv, 2, {{Internet Archive |id=eugeniorignanoup00rignrich |name=Eugenio Rignano upon the inheritance of acquired characters (1911)}}
  • BOOK, Rignano, Eugenio, 1926, Biological Memory, International Library of Psychology, Philosophy, and Scientific Method, Translated with an introduction by Ernest MacBride, Kegan Paul, Trench, Trübner & Co.; Harcourt (publisher), Harcourt, Brace & Company, 26009586, 811731, harv,
  • BOOK, Simpson, George Gaylord, George Gaylord Simpson, 1944, Tempo and Mode in Evolution, Columbia Biological Series, 15, Columbia University Press, a45000404, 993515, harv, Tempo and Mode in Evolution,
  • BOOK, Simpson, George Gaylord, 1964, This View of Life: The World of an Evolutionist, 1st, Harcourt (publisher), Harcourt, Brace & World, 64014636, 230986, harv,
  • BOOK, Simpson, George Gaylord, 1965, Life: An Introduction to Biology, 2nd, Harcourt, Brace & World, 65014384, 165951, harv,
  • BOOK, Springer, Joseph T., Holley, Dennis, 2013, An Introduction to Zoology, 1st, Jones & Bartlett Learning, 978-1-4496-4891-6, 2011022399, 646112356, harv,
  • BOOK, Steele, Edward J., Edward J. Steele, Lindley, Robyn A., Blanden, Robert V., 1998, Helix Books; Frontiers of Science, Lamarck's Signature : How Retrogenes Are Changing Darwin's Natural Selection Paradigm, Perseus Books Group, Perseus Books, 978-0-7382-0014-9, 98087900, 40449772, harv,
  • BOOK, Weismann, August, August Weismann, 1889, Poulton, Edward B., Edward Bagnall Poulton, Schönland, Selmar, Selmar Schonland, Shipley, Arthur E., Arthur Shipley, Essays Upon Heredity and Kindred Biological Problems,weblink Oxford University PressThe Clarendon Press, Clarendon Press, 77010494, 488543825, 2015-10-30, harv,
  • BOOK, Wilkins, John S., 2009, Originally published 2001 in Laurent, John; Nightingale, John (eds), Darwinism and Evolutionary Economics, chapter 8, pp. 160–183; Cheltenham, UK: Edward Elgar, The Appearance of Lamarckism in the Evolution of Culture, Hodgson, Geoffrey M., Geoffrey Hodgson, Darwinism and Economics, The International Library of Critical Writings in Economics Series, 233, Edward Elgar, 978-1-84844-072-2, 2008939772, 271774708, harv,
  • BOOK, Wood, Bernard, 2013, Wiley-Blackwell Encyclopedia of Human Evolution, First paperback, Wiley-Blackwell, 978-1-118-65099-8, 2013012756, 841039552, harv,
  • BOOK, Young, Robert Thompson, 1922, Biology in America, R.G. Badger, 22019903, 370597, harv, {{Internet Archive|id=biologyinamerica00younrich|name=Biology in America (1922)}}

Further reading

  • BOOK, Barthélemy-Madaule, Madeleine, 1982, Lamarck, the Mythical Precursor: A Study of the Relations Between Science and Ideology, English translation by M. H. Shank, MIT Press, 978-0-262-02179-1, 82010061, 8533097, Translation of Lamarck, ou, Le mythe du précurseur (1979)
  • BOOK, Bowler, Peter J., Peter J. Bowler, 1989, The Mendelian Revolution: The Emergence of Hereditarian Concepts in Modern Science and Society, Johns Hopkins University Press, 978-0-8018-3888-0, 89030914, 19322402,
  • NEWS, Burkeman, Oliver, Oliver Burkeman, 19 March 2010, Why everything you've been told about evolution is wrong,weblink The Guardian, Guardian Media Group,
  • NEWS, Rutherford, Adam, Adam Rutherford, 19 March 2010, Beyond a 'Darwin was wrong' headline, The Guardian,weblink
  • JOURNAL, Cook, George M., December 1999, Neo-Lamarckian Experimentalism in America: Origins and Consequences, The Quarterly Review of Biology, 74, 4, 417–437, 10.1086/394112, 2664721, 10672643,
  • BOOK, Desmond, Adrian, Adrian Desmond, 1989, The Politics of Evolution: Morphology, Medicine, and Reform in Radical London, Science and its Conceptual Foundations, University of Chicago Press, 978-0-226-14346-0, 89005137, 709606191,
  • MAGAZINE, Fecht, Sarah, October 19, 2011, Longevity Shown for First Time to Be Inherited via a Non-DNA Mechanism,weblink Scientific American, 2015-11-05,
  • BOOK, Gissis, Snait B., Jablonka, Eva., 2011, Transformations of Lamarckism: From Subtle Fluids to Molecular Biology, Vienna Series in Theoretical Biology, Illustrations by Anna Zeligowski, MIT Press, 978-0-262-01514-1, 2010031344, 662152397,
  • BOOK, Honeywill, Ross, Ross Honeywill, 2008, Lamarck's Evolution: Two Centuries of Genius and Jealousy, Murdoch Books, Pier 9, 978-1-921208-60-7, 2011431766, 746154950,
  • JOURNAL, Jablonka, Eva, Eva Jablonka, Lamb, Marion J., Marion J. Lamb, 2008, The Epigenome in Evolution: Beyond The Modern Synthesis,weblink Information Bulletin VOGiS, 12, 1/2, 242–254,
  • BOOK, Medawar, Peter, Peter Medawar, 1990, Pyke, David, The Threat and the Glory: Reflections on Science and Scientists, Foreword by Lewis Thomas, 1st U.S., HarperCollins, 978-0-06-039112-6, 89046107, 21977349, Contains the BBC Reith Lectures "The Future of Man."
  • BOOK, Molino, Jean, Jean Molino, 2000, Toward an Evolutionary Theory of Music and Language,weblink Wallin, Nils L., :sv:Nils L. Wallin, Merker, Björn, Björn Merker, Brown, Steven, The Origins of Music, MIT Press, 165–176, 978-0-262-23206-7, 98054088, 44963330, "Consists of papers given at a workshop on the origins of music held in Fiesole, Italy, May 1997, the first of a series called Florentine Workshops in Biomusicology."
  • JOURNAL, Peng, Wayne, December 27, 2011, Lamarckian viral defense in worms, Nature Genetics, 44, 15, 10.1038/ng.1062,
  • JOURNAL, Pennisi, Elizabeth, September 6, 2013, Evolution Heresy? Epigenetics Underlies Heritable Plant Traits, Science (journal), Science, 341, 6150, 1055, 10.1126/science.341.6150.1055, 24009370,
  • BOOK, Persell, Stuart, 1999, Neo-Lamarckism and the Evolution Controversy in France, 1870-1920, Studies in French Civilization, 14, Edwin Mellen Press, 978-0-7734-8275-3, 98048633, 40193707,
  • JOURNAL, Seki, Yoshiyuki, April 2013, Groszmann, Roberto J., Iwakiri, Yasuko, Taddei, Tamar H., Serum-mediated transgenerational effects on sperm: Evidence for lamarckian inheritance?, Hepatology (journal), Hepatology, 57, 4, 1663–1665, 10.1002/hep.26240, 23568276,
  • BOOK, Waddington, Conrad H., C. H. Waddington, 1961, The Human Evolutionary System, Banton, Michael, Michael Banton, Darwinism and the Study of Society: A Centenary Symposium; Chicago, IL, Tavistock Publications; Times Books, Quadrangle Books, 61007932, 1003950, "Essays ... based upon papers read at a conference held at the University of Edinburgh ... 1959."
  • BOOK, Ward, Lester Frank, Lester Frank Ward, 1891, Neo-Darwinism and Neo-Lamarckism, Press of Gedney & Roberts, 07037459, 4115244, "Annual address of the president of the Biological Society of Washington. Delivered January 24, 1891. (From the Proceedings, vol. VI.)" {{Internet Archive|id=neodarwinismand00washgoog|name=Neo-Darwinism and neo-Lamarckism (1891)}}.
  • JOURNAL, Whitelaw, Emma, Emma Whitelaw, February 2006, Epigenetics: Sins of the fathers, and their fathers, European Journal of Human Genetics, 14, 2, 131–132, 10.1038/sj.ejhg.5201567, 16421606,
  • JOURNAL, Yongsheng Liu, September 2007, Like father like son. A fresh review of the inheritance of acquired characteristics, EMBO Reports, 8, 9, 798–803, 10.1038/sj.embor.7401060, 1973965, 17767188,

External links

{{Wikipedia books|Evolution}}
  • WEB,weblink Jean-Baptiste Lamarck : works and heritage, 2015-11-07, — An English/French web site edited by Pietro Corsi (Oxford Univ.) and realised by CNRS (France - IT team of CRHST). This web site contains all Lamarck's books, texts, and manuscripts, and his herbarium.
  • WEB,weblink Jean-Baptiste Lamarck (1744-1829), Waggoner, Ben, Speer, Brian, February 25, 2006, Evolution, University of California Museum of Paleontology, 2010-07-03,
{{genarch}}{{Lysenkoism}}{{Evolution}}

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