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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 Swenet: [QB] [QUOTE]Originally posted by the lioness,: But if the paternal DNA is largely M81 are they ignoring that and only making these statements about European-related populations based on mtDNA ?[/QUOTE] [QUOTE]Originally posted by the lioness,: So how could DNATribes gte this much higher "North African" affinity. I was guessing becuase they are considering not only the mtDNA but the Y and the Y is where that North African M81 would come in.[/QUOTE]Like I said in the cited piece, it is based on genome-wide SNPs (many many ancestry informative markers), while haplogroups consist of just one ancestry informative marker (e.g., SNPs like M2, M60, M35 or what ever the defining SNP is of that haplogroup). When you take someone's haplogroup, you can only infer one of the potentially many ancestries in their genome. If I have Chinese ancestry (which I have), it may not register in haplogroup analysis because I also have African ancestry, and haplogroups can only depict one. Haplogroup analysis is like peeking into someone's wallet to get an idea of how much money they have, without having access to their safe or bank account where most of their money is (you liked that money metaphor didn't you?). Therefore, haplogroup analysis is inferior to genome-wide analysis when it comes to assigning ancestry. However, because haplogroups are so specific, they're superior to genomewide analysis when it comes to finding individuals who have the same maternal or paternal ancestor you have. In this instance (i.e., when we're trying to find out how much non-African ancestry Bebers have), we're interested in the former, not the latter. DNA Tribes concludes based on genome-wide analysis that the North African component is = 40-90% in Berber speakers and that this ancestry has affinities with populations outside of Africa Henn et al 2012 concludes based on genome-wide analysis that the North African component is = 40-90% in Berber speakers and that this ancestry has affinities with populations outside of Africa Behar et al 2010 concludes based on genome-wide analysis that the North African component is = 40-90% in Berber speakers and that this ancestry has affinities with populations outside of Africa Price et al 2009 concludes based on genome-wide analysis that the North African component is = 40-90% in Berber speakers and that this ancestry has affinities with populations outside of Africa etc etc [QUOTE]Originally posted by the lioness,: Also notice that last quote mentioned European but not Near Eastern you had mentioned in your pervious comment.[/QUOTE]Price et al said ''European related'' because a European sample was their reference sample. Also, there is no difference between 'European related' and 'Near Eastern'. [/QB][/QUOTE]
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