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Y-chromosomal Adam (Y-MRCA) is the patrilineal most recent common ancestor from whom all Y-DNA in living men is descended. An identification of a very rare and previously unknown Y-chromosome variant in 2012 led researchers to estimate that Y-chromosomal Adam lived 338,000 years ago (237,000 to 581,000 years ago with 95% confidence ), judging ...
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.
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]
According to Goody, in Late Medieval England, patrilineal primogeniture predominated in feudal tenures and among the peasantry of large parts of the Midlands. Patrilineal ultimogeniture ("Borough English") prevailed elsewhere in the champion country. Partible inheritance (gavelkind) prevailed in Kent, East Anglia and the Celtic areas. [25]
Within the descent group patrilineal descent lines were hierarchically organized, with descent from elder brothers invariably ranking higher than descent from younger brothers. The oldest member of the senior line (da zong) was the group's leader and the sole person who could perform rituals honouring the group's deceased founder and chief ...
In the anthropological study of kinship, a moiety (/ ˈ m ɔɪ ə t i /) is a descent group that coexists with only one other descent group within a society.In such cases, the community usually has unilineal descent (either patri-or matrilineal) so that any individual belongs to one of the two moiety groups by birth, and all marriages take place between members of opposite moieties.
This ancient matrilineal descent pattern is in contrast to the currently more popular pattern of patrilineal descent from which a family name is usually derived. The matriline of historical nobility was also called their enatic or uterine ancestry, corresponding to the patrilineal or "agnatic" ancestry.
Unilineal lineages can be matrilineal or patrilineal, depending on whether they are traced through mothers or fathers, respectively. Whether matrilineal or patrilineal descent is considered most significant differs from culture to culture. A clan is generally a descent group claiming common descent from an apical ancestor. Often, the details of ...