I have the sense people are trying to avoid references to R1b in certain literature. You'll have to forgive me for being a bit cynical, but I have been lied to extensively regarding what was known about the ancient East-West connections.
the Kalash may represent recent arrivals, or they may represent original Indo-Europeans. Linguistically they are Indo-Aryan. As I understand the evidence their mtDNA is closer to that of Northern Europe than to any other.

Using haplotype prediction, they are about 10% R1b. By the same method it is predicted that about 6% of the whole population shample is R1b.
That reinforces the suggestion that R1b was part of the original Indo-Aryan genepool.
The presence of an mtDNA genepool which consists exclusively of types found predominantly in Europe at the headwaters of the Indus in an isolated Indo-Aryan-speaking population
which has a high frequency of R1b1c (predicted), and R1a, suggests strongly that these people represent a population similar to the original Indo-Aryans.
The questions to ask is, from where are they from?

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