| http://www.w3.org/ns/prov#value | - YDNA is the kind of DNA contained only in the Y chromosome that only men have, and is passed down from father to son to son with relatively few changes through the generations.1 Because it doesn???t change much from generation to generation, any men who share enough of the same YDNA markers to be considered a match (and particularly if they???re considered a close match) are very likely to be desc
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