The Uttar Pradesh Meo maintain a system of community endogamy, and gotra exogamy.
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Endogamy is marrying within a group and in this case the group was a village.
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Endogamy, virilocality and polygyny are practiced in some Islamic countries.
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There are instances of health problems attributed to endogamy, including asthma and glaucoma.
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However, these results may principally reflect village endogamy rather than consanguinity per se.
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The marital patterns of the Amish are also an example of endogamy.
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The boundaries of structural endogamy in a kinship group are a special case of structural cohesion.
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It has been proposed that one of the features underlying cousin marriage in Pakistan is caste endogamy.
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Rather, their genetic distinctiveness is a result of centuries of low population size, genetic drift and endogamy.
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More examples
Marriage within one's own tribe or group as required by custom or law
(endogamous) characterized by or fit for fertilization by pollen from another flower of the same kind
(endogamous) pertaining to or characterized by the custom of marrying only within the limits of a clan or tribe
Endogamy is the practice of marrying within a specific ethnic group, class, or social group, rejecting others on such bases as being unsuitable for marriage or other close personal relationships. A Danish endogamist, for example, would require that a marriage be only with another Dane. ...
(Endogamous) The description of a group in which reproduction occurs only within that particular group. Examples of how "endogamous groups" are defined would be religious groups, social class, or a specific culture.
Marriage within a specific social unit.
The practice of seeking a mate or marriage partner from within a group defined by social status, ethnic identity, family relationship or area of residence or some other distinct social characteristic. For example, people tend to marry within their own status or class, religion or ethnic group. ...
Rules requiring selecting of a marriage partner from within a particular group.
The restriction of choice of spouses to members of one's own group.