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kinship is a mode of descent calculated from an ancestor
An ancestor is a parent or the parent of an ancestor ....
or ancestress counted through any combination of male and female links, or a system of bilateral kinship
Kinship is a relationship between any entities that share a genealogical origin, through either biological, cultural, or historical descent. And descent groups, lineages, etc. are treated in their own subsections....
where relations are traced through both a father and mother.