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Originally Posted by
bicicleur
'In Siberia, haplogroup N-M46 reaches a maximum frequency of approximately 90% among the Yakuts, a Turkic people who live mainly in the Sakha (Yakutia) Republic. However, it is practically non-existent among many of the Yakuts' neighboring ethnic groups, such as Tungusic speakers.'
is what wikipeadia says
if that is correct, I wonder how much intermingling could have happened
Quite a lot obviously. N1c frequency contrast there suggests that the incoming turkics imposed both their language and Y-DNA, but also that N1c1 came recently to that part of Siberia and did not have time to spread. Autosomally Yakuts are similar to neighbouring Siberians rather than Turkics of Mongolia and Altai (who are East-Central Asian rather than North Siberian), which is easiest to explain with an elite dominance model. The populations involved must have also been small, because Yakuts have extremely low Y-STR diversity.
It would probably be prudent to some day revise that Hong Shi et al map in a way that moves the main migration route to South Siberia/Central Asia, with diverging arrows moving to North Siberia and ending there. The model they present was more acceptable at the time of publication last year, because most significant Yakut-specific SNP's were not publicized then and they seemed ancestral to many more N1c1 clades in that regard - and only in that regard, not in light of their known population history and Y-STR's.
Y-STR diversity within a haplogroup is greatest in ancestral regions, and in N1c's case that's Southwestern China's Tibeto-Burman population (shown in Hong Shi et al). Second comes Europe, and only then Siberia - and that's all Siberian N1c put together, not just Yakuts. If the bulk of N1c was ever in North Siberia before getting to Europe, there should be higher STR diversity and perhaps also ancestral subclades. Last year it seemed that the former didn't exist there, but also that the latter could have, in Yakutia. But science marches on and now it looks like there's neither.