Originally Posted by
Babak
I've talked to Coldmountains on anthrogenica and asked him to give a response for Iranians and steppe admixture:
Hi, sorry for the late reply. If we define steppe as Sintashta/Steppe MLBA-like ancestry than around 20% i would say and Iranians from Khorasan, Sistan and Yazd would come closest to that.
For example i got this on Vahaduo for Zoroastrians which are from Yazd if i am not wrong and the most steppe shifted Iranians which are in the global25 spreadsheet currently. Kashkarchi are Steppe_MLBA-like people in Uzbekistan. They are almost identical to Sintashta only a bit mixed with Central Asians. I have not found the global25 coordinates of Khorasani people but i guess they are inbetween these Zoroastrians and Afghan Pashtuns. More South Asian/Iran_Neo and a bit more steppe shifted. Pashtuns are around 25-30% Sintashta-like in most estimates.
Target: Iranian_Zoroastrian
Distance: 1.5925% / 0.01592535
Aggregated
54.0 IRN_Tepe_Hissar_C
17.6 Anatolia_Barcin_N
14.6 UZB_Kashkarchi_BA
8.4 Levant_Natufian
2.8 RUS_Sintashta_MLBA_o1
1.6 IRN_Shahr_I_Sokhta_BA1
1.0 Mongola
But if we assume that steppe Iranics mixed heavily with BMAC before they entered Iran than the genetic change was much bigger. I replaced Kashkarchi with Turkmenistan_IA which was Pamiri-like and 50% Steppe_MLBA and 50% BMAC-like. So the most Steppe mixed Iranians in Khorasan are probably around 35-40% Turkmenistan_IA-like i guess.
Target: Iranian_Zoroastrian
Distance: 1.3016% / 0.01301572
Aggregated
39.2 IRN_Tepe_Hissar_C
27.0 TKM_IA
17.4 Anatolia_Barcin_N
8.6 Levant_Natufian
5.6 IRN_Shahr_I_Sokhta_BA1
1.8 RUS_Sintashta_MLBA_o1
0.4 Mongola