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Genomic Ancestry of North Africans Supports Back-to-Africa Migrations Brenna M. Henn
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[QUOTE]Originally posted by beyoku: [QB] ^ Hope it is clearer. Also keep in mind that this program is somewhat arbitrary. You can put in the data and tell it what to do and it will give you exactly what you are asking for. But just because it spits out data at any specific K we cannot always see this is real word definitions of Ancestry or genetically accurate descriptions of real life admixture events. perfect example: [IMG]http://4.bp.blogspot.com/-KSj15TD9Ucc/UbN0cxegsqI/AAAAAAAAB8o/b3yoKSWeyVQ/s1600/Caribbean-K7.png[/IMG] "Admixted latinos" (Major component in Black @ K=7) did not contribute that black component to Europeans. As a matter of fact Admixture Latinos did not even exist hundreds of years ago. Contexts means everything. IN the DNA tribes anaylsis that users the term "Saharo-Arabian" the can call the component really whatever they want. DOnt be confused by the name....but as the increase in K=(populations) sooner or later each population will differentiate. The results they have where Berbers and Arabs are in the same group at a pretty high K is not too optimal. They will turn around and use that same data and differentiate Berbers and Arabs and call the components totally different things the next day. Excuse the large picture but K=8 shows an ever starker contrast: [IMG]http://1.bp.blogspot.com/-9-yEBRrHGu8/UbgxJFIe1oI/AAAAAAAAASY/_W1cwNaQhoI/s1600/Moreno-Estrada_2013_Fig1C.png[/IMG] One tiny component in portugal and spain drifts comprise the vast majority of a component in Admixtued Latinos. Now this goes back to my very first post on why you could argue an African SSA origin of that Berber component or SW Asian component that is showing up in Behar. I would not make the argument......but there is some evidence that at least supports the idea. [/QB][/QUOTE]
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