Yesterday I blogged about a couple of newly discovered R1a1a SNPs that seemed to represent two major migration routes across Eurasia, one north of the Caspian Sea and the other south. These SNPs are Z280 and Z93 respectively, and I'll be watching how their story unfolds as new data comes in (see here). Meantime, I'd like to show how my theories gel with modern genome-wide autosomal DNA. Below is an MDS of a variety of samples from West Eurasia, Central Asia, Siberia and the Altai region. Note the two separate clines that run from the left (west) to the right (east). The top cline represents migrations from West Asia to the Altai, and then Turkic back migrations all the way to Anatolia. The bottom cline shows migrations from Northeastern Europe to Siberia, and then Turkic movements across the steppes from the Altai to Europe.
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Z93, as reported before, is characteristic of southern Caucasoids (Iberians, Italians, Greeks, Turks, Armenians, Caucasians, Jews, Arabs and Iranians) and South Asians. I look forward to see its distribution map in the FTDNA website.
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