Originally Posted by
MS85
ancient Iranians like the Mitanni, Kassites and Gutians rules Medopotamia/Babylon for thousands of years. I'm sure that ancient Assyrians, Mesopotamians or Armenians have a lot Iranic DNA in them. But nevertheless they are very low of Steppes or R1a.
R1a in South Central just bottlenecked and is a founder effect in that area. Obvious there was 'elite dominance' there. R1a is in that area evolved only from few males, most likely Scythians/Saka. It has nothing to do with much more ancient proto-Iranians from Kurdistan.
Afghans are mostly Pashtuns and Pashtuns are very close to Punjabis. Both groups were dominated by the Scythians and later they mixed with them. Tajiks have a lot of haplogroup R2a, J2a and even L. Tajiks are originally from Persia/Fars. Later on when they migrated into Central Asia they mixed with Central Asiac people, mostly Turco-Mongoloid people who had a lot R1a in them from the ancient Scythians
You should not confuse the history of Indian Peninsula with the Aryan history of Kurdistan.