How did CHG and Iran_Neolithic diverge?

[Kyp]

How were they created?
Did they diverge from another? If yes when and how
What are the differences?


It's a topic that is often mentioned but never explained.

[RatCat]

Their distance to each other and English-Iranian distances are nearly same actually, I didn't expect that much. I'd like to know your question's answer too.

Distance to: English
0.18146889 Iranian_Zoroastrian
0.18610657 Iranian_Fars
0.18979751 Iranian_B
0.19118429 Iranian_Seyyed
0.19174355 Iranian_Lor
0.19415138 Iranian_Jew
0.20322401 Iranian_Mazandarani
0.21502002 Iranian_Bandari

Distance to: GEO_CHG
0.18782902 Iran_N

Distance to: GEO_CHG
0.17871157 Iran_Neolithic:IRN_Ganj_Dareh_N:I1945
0.18085874 Iran_Neolithic:IRN_Ganj_Dareh_N:I1954
0.19046180 Iran_Neolithic:IRN_Ganj_Dareh_N:I1949
0.19203175 Iran_Neolithic:IRN_Ganj_Dareh_N:I1947
0.19506391 Iran_Neolithic:IRN_Ganj_Dareh_N:I1290

[Kyp]

Their distance to each other and English-Iranian distances are nearly same actually, I didn't expect that much. I'd like to know your question's answer too.

Distance to: English
0.18146889 Iranian_Zoroastrian
0.18610657 Iranian_Fars
0.18979751 Iranian_B
0.19118429 Iranian_Seyyed
0.19174355 Iranian_Lor
0.19415138 Iranian_Jew
0.20322401 Iranian_Mazandarani
0.21502002 Iranian_Bandari

Distance to: GEO_CHG
0.18782902 Iran_N

Distance to: GEO_CHG
0.17871157 Iran_Neolithic:IRN_Ganj_Dareh_N:I1945
0.18085874 Iran_Neolithic:IRN_Ganj_Dareh_N:I1954
0.19046180 Iran_Neolithic:IRN_Ganj_Dareh_N:I1949
0.19203175 Iran_Neolithic:IRN_Ganj_Dareh_N:I1947
0.19506391 Iran_Neolithic:IRN_Ganj_Dareh_N:I1290

Yes because these calculator have hypothetical components like "Gedrosian" build on modern populations. But such a thing does not exist in real life.
On academic PCA's CHG and Iran_Neolithic actually plots almost identical the only difference seems to be a slight AASI shift in Iran_Neolithic and maybe more Basal_Eurasian (could be wrong on that though).

[XenophobicPrussian]

We really can't know forsure without more genomes, or unless there's archeology that suggests later migrations. My guess would be both bases are Dzudzuana(although paleo Iranians probably more shifted to Natufian than WHG/paleo HG than Dzudzuana)-like and remained separated from that time, with both receiving separate ANE admixture later on from the north(around 14k-20k BC I would guess) to form both CHG and Iran_N respectively. If there's archeological evidence of later migrations, CHG could just be Iran_N with extra ANE.

[Token]

In the recent David Reich lab paper, Iran_N as Dzudzuana + ANE + Mbuti + Onge was a succesful model. CHG is the same thing with less Mbuti and Onge, in line with its more northerly location. Mbuti is a stand-in for a deep Near Eastern population that may represent a second out of Africa pulse since it seems to be more basal than Basal Eurasian.

[Zoro]

Iran-N and CHG ancestors probably diverged around 20,000 years ago before Last Glacial Maximum (LGM). Because Iran-N was more south it's population was not as decimated as CHG by ice age. We see this because CHG has longer runs of homozygosity meaning it experienced more of a bottleneck than Iran-N.

Differences:

-CHG and ENF contributed much more to Europeans than Iran-N. Iran-N contributed much more to Iranics and S Asians
- ENF is genetically closer to WHG than Iran-N
- Iran-N has more AASI than CHG
- Closest to Dzudzuana (basal eurasian) and Natufian is ENF followed by CHG followed by Iran-N
- CHG and Iran-N similar ANE but CHG a little closer to Tianyuan

[Aren]

In the recent David Reich lab paper, Iran_N as Dzudzuana + ANE + Mbuti + Onge was a succesful model. CHG is the same thing with less Mbuti and Onge, in line with its more northerly location. Mbuti is a stand-in for a deep Near Eastern population that may represent a second out of Africa pulse since it seems to be more basal than Basal Eurasian.
Basically this. I don’t think they split and diverged but they were probably distinct since atleast the Upper Paleolithic.