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Patrilineality, also known as the male line, the spear side [1] or agnatic kinship, is a common kinship system in which an individual's family membership derives from and is recorded through their father's lineage.
In anthropology, a lineage is a unilineal descent group that traces its ancestry to a demonstrably shared ancestor, known as the apical ancestor. [1] [2] [3] Lineages are formed through relationships traced either exclusively through the maternal line (matrilineage), paternal line (patrilineage), or some combination of both (). [4]
Detailed anthropological and sociological studies have been made about customs of patrilineal inheritance, where only male children can inherit. Some cultures also employ matrilineal succession, where property can only pass along the female line, most commonly going to the sister's sons of the decedent; but also, in some societies, from the mother to her daughters.
Nevertheless, graphs depicting matrilineal descent (mother-daughter relationships) and patrilineal descent (father-son relationships) do form trees. Assuming no common ancestor, an ancestry chart is a perfect binary tree , as each person has exactly one mother and one father; these thus have a regular structure.
Patrilineal primogeniture predominated in ancient times. The Laws of Manu state that the oldest son inherits all of the father's estate. [60] Since the Middle Ages patrilineal equal inheritance has prevailed in perhaps a majority of groups, [61] although the eldest son often received an extra share. [62]
Agnatic primogeniture or patrilineal primogeniture is inheritance according to seniority of birth among the sons of a monarch or head of family, with sons inheriting before brothers, and male-line male descendants inheriting before collateral male relatives in the male line, and to the total exclusion of females and descendants through females ...
Membership in haplogroups Q and C3b implies Indigenous American patrilineal descent. [49] The micro-satellite diversity and distribution of a Y lineage specific to South America suggest that certain Indigenous American populations became isolated after the initial colonization of their regions. [14]
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