нашел следующую информацию думаю специалисты объяснят лучше чем я:
http://r2dna.org/index.php?topic=571.0Results
The paucity of 12/12 matches (or even 1/2-step) alone indicate these Siberian R2a's are divergent to the R2 project participants beyond the genealogical time frame. Therefore, we can already surmise none of the Jewish, Iranian, Indian, European or Near-Eastern R2a's in the project are recently related to them.
Deeper analysis of the Buryat and Kalmyk haplotypes through McGee's Y-Utility reveals the MCRA (Most Common Recent Ancestor) was roughly 900 years ago based on the single one-step mutation on DYS389ii (Infinite allele mutation model, 30 years/gen, constant mutation rate of 0.0024). This date (~1100 A.D.) coincides with the rise of Mongolian steppe dominance and falls just short of Genghis Khan's reign. Based on the above, it is likely the haplotype differentiation happened in historical times and the common ancestor was a native of the region.
Comparing the Buryat and Kalmyk haplotypes with the R2 project participants with the Y-Utility again demonstrates their great divergence. The earliest match to both is a Syrian paternal ancestor (1530-2190 y.b.p.). All other matches are invariably between 2970-7530 y.b.p. with little geographical coherency. This is likely an artefact of the limited number of STR's.
Summary
Although the number of STR's has limited the scope of this investigation,
the Buryat and Kalmyk R2a haplotypes display a striking degree of exclusivity from other Eurasian R2a's and match each other well enough to conclude a recent mutual ancestor pre-dates the two and was likely a native of the region, probably around Genghis Khan's era. The twelve STR's alone have safely shown that R2a in Siberia is not of recent South Asian origins, indicating a greater antiquity in Siberia as well as Central Asia, which is presumably the source location.
Additional
Phylogenetic tree showing degree of relatedness between Buryat and Buryat-Kalmyk haplotypes relative to the R2a FTDNA Project participants on the 12 STR's used in this investigation (attached). FITCH and FigTree used to generate. Special thanks to vineviz for elaborating on their application. Inferences should be made with plenty of caution given the low number of STR's, but it is interesting to see the Syrian match appear again.
Through this investigation I have inadvertently coined a "Mongolian" R2a Haplotype (i.e. mutual Buryat and Kalmyk) defined by the following STR's;
Code:
DYS393 DYS390 DYS19 DYS391 DYS385 DYS439 DYS389i DYS392 DYS437 DYS438
14 23 14 10 12-19 10 12 10 16 11
к