Haplogroup A (Y-DNA)
Human Y-chromosome DNA haplogroup / From Wikipedia, the free encyclopedia
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This article is about the human Y-DNA haplogroup. For the unrelated human mtDNA haplogroup, see Haplogroup A (mtDNA).
Haplogroup A is a human Y-chromosome DNA haplogroup, which includes all living human Y chromosomes. Bearers of extant sub-clades of haplogroup A are almost exclusively found in Africa (or among the African diaspora), in contrast with haplogroup BT, bearers of which participated in the Out of Africa migration of early modern humans. The known branches of haplogroup A are A00, A0, A1a, and A1b1; these branches are only very distantly related, and are not more closely related to each other than they are to haplogroup BT.
Quick Facts Possible time of origin, Coalescence age ...
Haplogroup A | |
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Possible time of origin | 270,000 BP,[1][2] 275,000 BP (303,000-241,000 BP),[3][4] 291,000 BP[5] |
Coalescence age | 275,000 BP (split with other lineages)[6] |
Possible place of origin | Northwest Africa, Central Africa[7] |
Ancestor | Human Y-MRCA (A00-T) |
Descendants | primary: A00 (AF6/L1284), A0-T (Subclades of these include haplogroups A00a, A00b, A00c, A0, A1, A1a, A1b, A1b1 and BT.) |
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