The Ancestor reference article from the English Wikipedia on 24-Apr-2004
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Ancestor

An ancestor is a parent or (recursively) the parent of an ancestor. So this includes a father or mother, as well as grandparents, great-grandparents, and so on.

Two individuals have a genetic relationship if one is the ancestor of the other or if they share a common ancestor.

Some societies have had a form of ancestor worship; most modern societies seem to have focused this into genealogy.

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