Post by Verinen Paroni on Aug 18, 2006 16:21:05 GMT 3
The Finns and Y-chromosome tat-c
Tat-C (haplogroup 16) is a Y-chromosome lineage that originated in Central Asia and spread to Northeastern Europe with male migrations occurring over the last 4000 years. 7C (haplogroup 12) is its ancestral haplotype, which has been dated to about 6000 Y.B.P.
"The Tat-C haplogroup was observed at significant frequencies in each of the southern Middle Siberian populations studied. Surprisingly, it reached its highest frequency in the Siberian Eskimos and Chukchi from the Chukotkan peninsula. The Tat-C haplogroup was absent in the Lower Amur and Sea of Okhotsk region populations that have maintained greater geographic and/or linguistic isolation (e.g., the Udegeys, Nivkhs, and Upriver Negidals) and was only detected in the populations likely to have had recent contact or shared origins with the populations of southern Middle Siberia (e.g., the Okhotsk Evenks, Ulchi/Nanai, and Downriver Negidals). Because the Tat-C polymorphism originated on a Y chromosome containing the DYS7C deletion (haplogroup 7C), which was present only in the Middle Siberian Tuvans, Buryats, Tofalars, and Yenisey Evenks, the Tat-C haplogroup probably entered the Lower Amur and eastern Siberia from southern Middle Siberia. This conclusion is consistent with the previous hypothesis that the Tat-C and 7C haplogroups arose in central Asia and migrated west to northern Europe and east to Chukotka (Zerjal et al. 1997).
Tat-C Frequencies :
Yakuts..........87%
Eskimos.........61%
Chukchi.........58%
Finns...........55%
Buryats.........52%
Tofalars........47%
Lithuanians.....47%
Lapps...........42%
Estonians.......37%
Maris...........33%
Latvians........32%
Nenets..........30%
Tuvans..........18%
Chuvash.........18%
Tat-C (haplogroup 16) is a Y-chromosome lineage that originated in Central Asia and spread to Northeastern Europe with male migrations occurring over the last 4000 years. 7C (haplogroup 12) is its ancestral haplotype, which has been dated to about 6000 Y.B.P.
"The Tat-C haplogroup was observed at significant frequencies in each of the southern Middle Siberian populations studied. Surprisingly, it reached its highest frequency in the Siberian Eskimos and Chukchi from the Chukotkan peninsula. The Tat-C haplogroup was absent in the Lower Amur and Sea of Okhotsk region populations that have maintained greater geographic and/or linguistic isolation (e.g., the Udegeys, Nivkhs, and Upriver Negidals) and was only detected in the populations likely to have had recent contact or shared origins with the populations of southern Middle Siberia (e.g., the Okhotsk Evenks, Ulchi/Nanai, and Downriver Negidals). Because the Tat-C polymorphism originated on a Y chromosome containing the DYS7C deletion (haplogroup 7C), which was present only in the Middle Siberian Tuvans, Buryats, Tofalars, and Yenisey Evenks, the Tat-C haplogroup probably entered the Lower Amur and eastern Siberia from southern Middle Siberia. This conclusion is consistent with the previous hypothesis that the Tat-C and 7C haplogroups arose in central Asia and migrated west to northern Europe and east to Chukotka (Zerjal et al. 1997).
Tat-C Frequencies :
Yakuts..........87%
Eskimos.........61%
Chukchi.........58%
Finns...........55%
Buryats.........52%
Tofalars........47%
Lithuanians.....47%
Lapps...........42%
Estonians.......37%
Maris...........33%
Latvians........32%
Nenets..........30%
Tuvans..........18%
Chuvash.........18%