On the origin of Y-chromosome haplogroup N1b
Boris Malyarchuk and Miroslava DerenkoA possible scenario explaining the phylogeographic pattern of hg N1b is that the subclusters N1b-A and N1b-E might have diverged from a common ancestor
anywhere in Siberia approximately 15 ky ago (with upper bound of divergence time, TD, between these subclusters estimated (according to Zhivotovsky9) as 14.7±5.9 ky). According to STR variation, expansion of Northwest Siberian/Uralic/Northeast European branch, N1b-E, may have occurred approximately 7 kya and the expansion of South Siberian branch N1b-A about 5 kya. Divergence time between South Siberian and Northwest Siberian/Uralic N1b-A haplotypes is 4 ky (TD?4.0±1.0 ky), so this suggests that expansion of N1b-A lineages in Northwest Siberia and Urals
(about 3 kya) might have occurred right after their migrations from South Siberia. Future studies of Y-chromosome variation using a combined STR-SNP approach may enable a better definition of geographic origin of N1b-P43 mutation.
http://www.nature.com/ejhg/journal/vaop/ncurrent/abs/ejhg2009100a.html
Тема: On the origin of Y-chromosome haplogroup N1b (Прочитано 3199 раз)