Why do Iberians have a little extra non-caucasoid then other euros?

[Decius]

Ive noticed this with some Iberian gedmatch results. For some reason they typically get more Non caucasoid elements then most other European groups (excluding Northeast europe). Is there a reason for this? What is the source of this Admixture?

[Joso]

neolithic farmers

[Decius]

neolithic farmers

Cant be. The closest population to Neolithic Farmers are Sardinians and they are some of the most caucasoid people on the planet.

[Joso]

Cant be. The closest population to Neolithic Farmers are Sardinians and they are some of the most caucasoid people on the planet.

ok, i thought you meant non-european

[SharpFork]

I've no idea, the East to West increase in SSAfrican admixture is also curious, obviously there is also a North to South increase but it's virtually matched by the former gradient, meaning regions like Galicia have as much African as Murcia if I recall correctly.

[Calpurnius]

Depends on the calculator I guess and what you call non-caucasian. North Africa is likely the culprit, I don't think Iberians have excess African related ancestry that isn't included in their north African ancestry.

[21993]

Indirect Negroid DNA from Moorish

[SharpFork]

Depends on the calculator I guess and what you call non-caucasian. North Africa is likely the culprit, I don't think Iberians have excess African related ancestry that isn't included in their north African ancestry.

In Portugal there must be, Subsaharan mtDNA has been detected in sizeable amounts in some places.

Indirect Negroid DNA from Moorish

Why is there so much of it in Galicia though?

[Genetic]

Depends on the calculator I guess and what you call non-caucasian. North Africa is likely the culprit, I don't think Iberians have excess African related ancestry that isn't included in their north African ancestry.

Some Portuguese members (like Pedro Ruben) score between 3~4% SSA in different calculators. That's not normal for other Europeans.

[Calpurnius]

Some Portuguese members (like Pedro Ruben) score between 3~4% SSA in different calculators. That's not normal for other Europeans.

I think the calculator matters though. For instance if you have a north African cluster that is supposed to capture the main north African ancestral component, that doesn't mean the north African population that admixed into Iberia was simply 100% of this. The most likely source for north African admixture in Iberia is reasonably Morocco, and compared to this component Moroccans themselves may score additional SSA, which as a consequence may show up in Iberians too. So what I'm saying is, this SSA that shows up may in fact have been part of whatever north African population admixed into Iberia.

Running a simple model for Iberians with European sources and Moroccan_North+Dinka/Yoruba, no excess SSA seems needed, though of course the academic samples especially for Portugal may not be fully representative.