Board Thread:Grimm Fanfic/@comment-29777876-20160827162945/@comment-108.46.200.213-20170401201614

OnePieceNation wrote: Anybody else has a problem with the fact they are all descendants from one individual? = No, for a given mutation often all the descendants are from that one individual. As an example, the Y-chromosomal Adam,  is estimated to be 200k to 300k years old ,  is the most recent common male ancestor for all currently living males derived their Y chromosome. =