Caucasoid Y chromosome Haplogroups

The great majority of male living Caucasoids have a Y chromosome that belongs in one of the following haplogroups: E, G, I, J, N, R

There is however no monophyletic lineage which encompasses all Caucasoid Y chromosomes. Some of these haplogroups are more closely related to other haplogroups that are frequent in other races than they are to those of other Caucasoids.

Haplogroup E has an African-Near Eastern-European distribution and is shared by Caucasoids and Negroids. Surprisingly, it is related to haplogroup D which is found in Mongoloids from Tibet and Japan.

Haplogroup N is found in North Eurasia from Europe to the Pacific and is shared by Caucasoids and Mongoloids. It is related to haplogroup O which is found in Mongoloids.

Haplogroup R is found in Caucasoids (*) and is related to haplogroup Q which is found in Native Americans and more distantly to N and O.

Haplogroup I is found in Caucasoids, especially European ones. It may have been brought into Europe from West Asia by the Gravettians.

Haplogroup J is found in Caucasoids and is associated with the Neolithic diffusion and also with movements of Arabians. It is related to haplogroup G

Haplogroup G is found in Caucasoids and in particular the Caucasus region. It may have diffused during the Neolithic as well. It is related to haplogroup J.

(*) With a high frequency in Cameroon, which is due to a back-migration into Africa!

Posted by Dienekes at April 8, 2004 04:52 PM | PermaLink