
Originally Posted by
sparkey
I think the source you linked gets a few things wrong. In particular, this seems far off:
The dominant strain of R1b in Europe is nowhere near that old, it's closer to 6000 years old. See ISOGG. And European R1a, although older, is also not as old as that, arising closer to 18,500, possibly in Asia (ISOGG again).
What that means for Old Europeans and the Slavs: Haplogroup I was dominant in Europe before the Neolithic expansion, and R1a/R1b are later arrivals. R1a has a strong correlation with the spread of Slavic languages, indicating that R1a is the more "Slavic" haplogroup, having more recent Asian origins, and I2a is the more anciently European haplogroup, but probably had many of its peoples adopt Slavic languages as R1a peoples migrated their direction.
I think using the term "Mongolian" confuses the issue. If we must use an ethnic term for R1a, I think "Indo-European" is fairly appropriate.