GENETICS Toubou Nilotes in Northern Chad have a lot of Afro-Asiatic admixture

[Apollo]

Less so than Nubians in North Sudan, but still quite a lot of for Nilo-Saharans:

http://www.cell.com/ajhg/comments/S0002-9297(16)30448-7

Explains why many of them look pseudo-Horner:

 

[World]

“Previous studies have suggested that the Eurasian backflow into East Africa came from a population related to early Neolithic farmers.Table S5). We then looked at the correlation of the f3 statistic values between the two tests (Figure 4A). We found that the Eurasian source populations for the Amhara and Toubou were highly correlated (r = 0.98; 95% CI = 0.98–0.99; p value < 2.2 × 10−16) and that the most significant result was for present-day Sardinians.“

We Wuz Europeans...

 

[Apollo]

@World

Sardinians are genetically very different from most Europeans. Even from other Southern Europeans. They are an isolate group of Neolithic farmers not affected by subsequent migrations on mainland Europe. They don't even cluster with peninsular Italians.

 

[MARAQ DIGAAG]

I believe their oral history claims a migration from East Africa at one point in time .

 

[Apollo]

I believe their oral history claims a migration from East Africa at one point in time .

Their autosomal ancestry is just from Sudan, not the Horn. There is a difference.

 

[Thegoodshepherd]

@World

Sardinians are genetically very different from most Europeans. Even from other Southern Europeans. They are an isolate group of Neolithic farmers not affected by subsequent migrations on mainland Europe. They don't even cluster with peninsular Italians.

Are Sardinians the closest living descendants of the Natufians?

 

[Grant]

"In addition to the early Eurasian migration to Africa
~6,000 ya, a second migration ~3,000 ya affected the
Toubou population in northern Chad but had no detect-
able genetic impact on other Chadian populations. This
migration appears to be associated with the previously re-
ported Eurasian backflow into East Africa, given that the
source populations and dates of mixture are similar. Occur-
ring at the start of the Iron Age, these migrations could
have been facilitated by advances in warfare and transpor-
tation technology in the Near East."

 

[anonimo]

"In addition to the early Eurasian migration to Africa
~6,000 ya, a second migration ~3,000 ya affected the
Toubou population in northern Chad but had no detect-
able genetic impact on other Chadian populations. This
migration appears to be associated with the previously re-
ported Eurasian backflow into East Africa, given that the
source populations and dates of mixture are similar. Occur-
ring at the start of the Iron Age, these migrations could
have been facilitated by advances in warfare and transpor-
tation technology in the Near East."

This Eurasian migration might be the source of their large haplogroup T lineage, and possibly mine. Unlike the other ethnic groups in Chad, they were found to be unique in possessing a high percentage of haplogroup T males.

Just a theory.

 

[Prince Abubu]

@World

Sardinians are genetically very different from most Europeans. Even from other Southern Europeans. They are an isolate group of Neolithic farmers not affected by subsequent migrations on mainland Europe. They don't even cluster with peninsular Italians.

What about Tuscans and Basques, I read they also have some really old pre-indo-european genes?

What other populations have old Natufian ancestry?

 

[Merca]

Beautiful people