The finding that the Bronze Age population, like that of
Krasnoyarsk Siberians belonged exclusively -as far as sampling
allows- to Y-chromosome haplogroup R1a1 is extremely interesting
as it raises the issue of when and how exactly the diverse
extant Y-chromosome gene pool of Central Asia came about. We can
now confidently say that even at the early age of ~4ky BP an
R1a1-bearing population of presumably western Eurasian origin
had acquired a mixed mtDNA gene pool consisting of both west-
and east-Eurasian mtDNA, which agrees with what was presented in
the aforementioned documentary, in which many of the seemingly
Caucasoid mummies had East Eurasian mtDNA. From the paper: The
dominant haplogroup in the Xiaohe people was the East Eurasian
lineage C, shared by 14 Xiaohe individuals who were associated
with two different mtDNAhaplotypes (S1 and S2). According to the
coding region 11969 A to G, all lineage C found in the Xiaohe
people were further classified to subhaplogroup C4, which had
D-loop group-specific po