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DNA studies if black amazigh im Morocco
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[QUOTE]Originally posted by Ish Gebor: [QB] [QUOTE]Originally posted by Swenet: [qb] [QUOTE]Originally posted by Ish Gebor: How do Yorubas represent other African populations from the Sahel, Sahara or even sub Sahara in distance? [/QUOTE]What about that treemix graph makes you object that Yorubas didn't cause that admixure by themselves? The graph doesn't say that. [/qb][/QUOTE]I am asking because they often use the Yoruba as the representative group for all of sub Sahara Africans. What I meant is (was) why they use them specifically. I had to look up the paper, to get a better understanding of that treemix. "We constructed trees that infer population relationships using TreeMix [62]. This method estimates both population splits and the possibility of population mixture. First, we build a maximum-likelihood tree setting the position of the root at the Yoruba (Figure 4B). South Moroccans and Saharawi appear close to Yoruba while Egyptians are on a branch leading to Middle Easterners and Basque. Next, we set TreeMix to allow migration edges (m) and test by increasing m sequentially up to m = 20. The initial tree structure remains mostly unchanged when migration edges are added. All North Africans except Tunisians appear admixed from an ancestral population to Yoruba. [...] All North Africans except Tunisians appear to be a mixture of populations related to Yoruba and Eurasians (Basque and Lebanese Christians). Tunisians, Yoruba, Basque, and Lebanese Christians appear to be related to other groups by a simple tree implying a history of divergence without subsequent mixture." [/QB][/QUOTE]
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