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By the way, where is it stated that in Catalonia there is no genetic imprint of the Moors? I would like to read more about this.
Farstar, in the case you're interested, I found this paper on the subject:When Moorish arrived in Iberia, they possibly had a bit of shared ancestry with Europeans too. They must have carried Taforalt-like and also other components then, but I have no idea on the impact of "actual" Moorish DNA over Iberia.
Yes, it can cause problems sometimes. If the populations are far enough genetically, even being from different times, it's better. It also depends on the goal, I guess. Sometimes people use related pops to separate "extra" ancestry. Or they may want to "overfit" the model to better isolate some specific component and estimate a minimal contribution of it. In this case, the %s per se as a whole would not matter that much; just a specific one would be more, say, "informative".
@Carlos
When Moorish arrived in Iberia, they possibly had a bit of shared ancestry with Europeans too. They must have carried Taforalt-like and also other components then, but I have no idea on the impact of "actual" Moorish DNA over Iberia.
Farstar, in the case you're interested, I found this paper on the subject:
Patterns of genetic differentiation and the footprints of historical migrations in the Iberian Peninsula
https://www.nature.com/articles/s41467-018-08272-w
It was discussed here:
https://www.eupedia.com/forum/threads/35638-New-autosomal-analysis-of-Iberia
The Moorish genetic contribution would vary substantially among Iberians, which is expected. We see in the Supplementary:
"The North Moroccan component steadily declines from 11% in the far west to near 0% in the Basque region. The pattern of North Moroccan contributions is similar to the Western Saharan contributions, and approximately opposite to the pattern of French contributions."
About Basques they say:
"Specifically the Basque share even more DNA with the French group than predicted by their mixture representation, which might reflect, for example, that the DNA the Basque share with present-day French is only a subset of modern French ancestry. This pattern is seen for other Spanish groups also, but to a much lesser extent."
Galicia-Portugal seems to have the highest contribution from Morocco (11%), while Aragon-Cataluna has the lowest (apart Basques):
More (you can find a more complete version in Figure 5 at Supplementary Info:
Patterns of genetic differentiation:
It doesn't perfectly correlate to E-M81 map from Eupedia:
Later I'll try to see how all the above relate with Taforalt admixture according to G25:
http://g25vahaduo.genetics.ovh/
If Taforalt is basically 55% Dzudzuana plus "extra-Basal", it's basically ~40% Villabruna-related plus ~60% Basal. Looks W. Eurasian-related, indeed.most of their ancestry was probably "european-like", dzudzuana levant related and also from WHG. the taforalt part is itself partially westeurasian.
I lack the basic knowledge to opine regarding the way Iberians resisted.According to this paper, then, the myth of the "Reconquista" being from Asturias (i.e. people from Asturias resisted the Moors the most) is apparently wrong, and instead, the Basques and the Catalans are the ones that resisted the Moors the most, right? ("resist" meaning not only in fighting, but in not integrating them into the society, and differentiating "us from them").
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