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{{Short description|Marrying within a specific ethnic group, class, or social group}}{{Use dmy dates|date=January 2022}}{{more citations needed|date=March 2023}}{{Anthropology of kinship |concepts}}Endogamy is the cultural practice of mating within a specific social group, religious denomination, caste, or ethnic group, rejecting any from outside of the group or belief structure as unsuitable for marriage or other close personal relationships. Its opposite, exogamy, describes the social norm of marriage outside of the group. Endogamy is common in many cultures and ethnic groups. Several religious and ethnic religious groups are traditionally more endogamous, although sometimes mating outside of the group occurs with the added dimension of requiring marital religious conversion. This permits an exogamous marriage, as the convert, by accepting the partner's religion, becomes accepted within the endogamous group. Endogamy, as distinct from consanguinity, may result in transmission of genetic disorders, the so-called founder effect, within the relatively closed community.

Adherence

{{Further|Population genetics|inbreeding}}Endogamy can encourage sectarianism and serves as a form of self-segregation. For instance, a community resists integration or completely merging with the surrounding population. Minorities can use it to stay ethnically homogeneous over a long time as distinct communities within societies that have other practices and beliefs.The isolationist practices of endogamy may lead to a group's extinction, as genetic diseases may develop that can affect an increasing percentage of the population. However, this disease effect would tend to be small unless there is a high degree of close inbreeding, or if the endogamous population becomes very small in size.

Social dynamics

The Urapmin, a small tribe in Papua New Guinea, practice strict endogamy. The Urapmin also have a system of kinship classes known as tanum miit. Since the classes are inherited cognatically, most Urapmin belong to all of the major classes, creating great fluidity and doing little to differentiate individuals.BOOK The small community on the South Atlantic island of Tristan da Cunha are, because of their geographical isolation, an almost endogamic society. There are instances of health problems attributed to endogamy on the island, including glaucoma and asthma as research by the University of Toronto has demonstrated.NEWS,weblink BBC News, Worldwide search for asthma clue, 9 December 2008, 15 March 2012, live,weblink" title="web.archive.org/web/20111123092415weblink">weblink 23 November 2011,

Genealogy

Endogamic marriage patterns may increase the frequency of various levels of cousin marriage in a population, and may cause high probability of children of first, second, third cousins, etcetera.If a cousin marriage has accrued in a known ancestral tree of a person, in historical time, it is referred to as pedigree collapse. This may cause relations along multiple paths between a person's autosomal-DNA matches. It creates stronger DNA matches between the DNA matches than expected from the nearest path.WEB,weblink Endogamy Part 1: Exploring Shared DNA | Legacy Tree Genealogists, 13 October 2016, Cousin marriage should not be confused with double cousins, which do not cause a pedigree collapse. Certain levels of sibling marriage and cousin marriage is prevented by law in some countries, and referred to as consanguinity.A long term pattern of endogamy in a region may increase the risk of repeated cousin marriage during a long period of time, referred to as inbreeding. It may cause additional noise in the DNA autosomal data, giving the impressions that DNA matches with roots in that region are more closely related than they are.

Examples

{{expand section|endogomy characteristics in Japan|date=April 2023}}Examples of ethnic and religious groups that have typically practiced endogamy include:

• AlawitesWEB,weblink Syria's Ruling Alawite Sect, 14 June 2011,
• The Amish of North America.WEB,weblink Genomics in Amish Country, Ruder, Katherine 'Kate', 23 July 2004, Genome News Network,
• Various Arab tribesJOURNAL,weblink 3629435, The Structure of Endogamous Unilineal Descent Groups, Patai, Raphael, Southwestern Journal of Anthropology, 1965, 21, 4, 325–350, 10.1086/soutjanth.21.4.3629435, 147674220,
• Assyrians, indigenous Christian people of upper Mesopotamia.BOOK, Dr. Joseph Adebayo Awoyemi, Pre-marital Counselling In a Multicultural Society,weblink 14 September 2014, 978-1-291-83577-9, 75–, Lulu.com, {{Dead link|date=September 2023 |bot=InternetArchiveBot |fix-attempted=yes }}
• Armenians have a history of endogamy due to being almost entirely surrounded by Islamic neighbours while being a strongly Christian nation.BOOK, Armenia in Pictures, Waters, Bella, Learner Publishing Group, 2009, 9780822585763, Minneapolis, MN, 25,
• Coptic ChristiansJOURNAL, Patrick Alexander Younan, The Coptic Christians of Egypt: Dhimmitude and Discrimination, Law School Student Scholarship, 2014,weblink
• Daylamites, an ethnic group living south of the Caspian Sea in ancient and medieval Persia.
• DruzeBOOK, Displacement and Dispossession in the Modern Middle East, Chatty, Dawn, Cambridge University Press, 978-0-521-81792-9, 15 March 2010,
• Gitanos typically practice endogamy within their raza, or patrigroup.WEB, Gay y Blasco, Paloma, Gitano Evangelism: the Emergence of a Politico-Religious Diaspora,weblink Index of working papers, 3 February 2020, www.transcomm.ox.ac.uk/working papers/WPTC-01-04 Gayyblasco.pdf, 25 September 2006,weblink" title="web.archive.org/web/20060925054608weblink">weblink dead,
• Greek Cypriots usually practice endogamy in order to maintain their status as the majority ethnic group on the island of Cyprus.
• Iranian Turkmens{{citation needed|date=June 2021}}
• Lepcha, an ethnic group in India, Nepal, and Bhutan
• Judaism traditionally mandates religious endogamy, requiring that both marriage partners be Jewish, while allowing for marriage to converts. Orthodox Judaism maintains the traditional requirement for endogamy in Judaism as a binding,Kiddushin 68b inherent part of Judaism's religious beliefs and traditions.WEB, Jerome M., Epstein, 29 October 2020, Endogamy is a mitzvah,weblink Jewish Standard,
• The Knanaya, an endogamous group within the St. Thomas Christian Community of India. The community claims to have arrived to India in the fourth century and have been noted for their historical practice of endogamy.{{Citation needed|date=December 2021}}
• Members of the Church of Jesus Christ of Latter-day Saints or other religious and/or cultural groups relating to Mormonism
• Syrian Christians of Kerala, India - but Marital conversion is allowed.
• Parsis.JOURNAL, Qamar, Raheel, Ayub, Qasim, Mohyuddin, Aisha, Helgason, Agnar, Mazhar, Kehkashan, Mansoor, Atika, Zerjal, Tatiana, Tyler-Smith, Chris, Mehdi, S. Qasim, Y-Chromosomal DNA Variation in Pakistan, The American Journal of Human Genetics, May 2002, 70, 5, 1119, 10.1086/339929, 11898125, 447589,
• RajputsBOOK, Fischer, R. J., 1997, Castes and Caste Relationships, If Rain Doesn't Come,weblink Manohar Publishers and Distributors, 53ff, 978-8173041846,
• The Vaqueiros de alzada of Spain.García Martínez, Adolfo (2009) [1988]. Los vaqueiros de alzada de Asturias: un estudio histórico-antropológico (Second edition)[in Spanish]. Oviedo: KRK Ediciones. p.746-748. {{ISBN|978-8-483-67229-7}}.
• YazidisBOOK, The Yezidis: The History of a Community, Culture and Religion,weblink I.B.Tauris, 23 December 2014, 9780857720610, en, Birgül, Açikyildiz, MAGAZINE, Everything You Need to Know About the Yazidis,weblink Time (magazine), Time, 7 February 2016, Mirren, Gidda,
• Mandaeans
• Most Hindu jatis on the Indian subcontinent, as well as many endogamous baradaris among South Asian Muslims

See also

• Anti-miscegenation laws
• Arranged marriage
• Assortative mating
• Consanguinity
• Ethnic nationalism
• Ethnoreligious group
• Genealogical DNA test
• Interfaith marriage
• Jāti
• Miscegenation

Cousin marriage:

• Cousin marriage
• Marriages and gotras
• List of coupled cousins

Marriage systems:

• Exogamy
• Homogamy
• Hypergamy

References

{{Reflist}}

External links

• EB1911, Endogamy, 9, x,
• JOURNAL,weblink 10.1093/ije/dyp313, Commentary: The background and outcomes of the first-cousin marriage controversy in Great Britain, 2009, Bittles, A. H., International Journal of Epidemiology, 38, 6, 1453–1458, 19926668, free,

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