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Some questions I recently asked Dr. Shomarka Keita about the Ancient Egyptians
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[QUOTE]Originally posted by MindoverMatter718: [QB] [QUOTE]Originally posted by Morpheus: [qb] It does seem strange to me that North Africans would evolve such light skin but then again there are light skinned people in Southwest Asia at the same latitude and the Khoisan deep in the heart of Africa have light skin so it is plausible. [/qb][/QUOTE]Well, as one would have to be more specific when asking questions, being that a question beating around the bush wouldn't be met with as much clarity as a straight forward one. Meaning that when you ask Keita about the light skin of northern Africans being in situ evolution etc.. its not very clear and his answer will most likely be on that can be left open for interpretation. So with that said, note the following genetic information, note that the genes for pale skin which evolved in situ Europe are accounted for in geographically proximate populations in North Africa, the Middle east and Pakistan. Genetic Evidence for the Convergent Evolution of Light Skin in Europeans and East Asians Heather L. Norton,*1 Rick A. Kittles [i]In contrast, the **ancestral allele** associated with **dark pigmentation** has a shared high frequency in **sub- Saharan African and Island Melanesians**.A notable exception is the relatively lightly pigmented San population of Southern Africa where the **derived allele** predominates (93%), although this may be simply due to small sample size (n514). The distributions of the **derived and ancestral alleles** at TYR A192C, MATP C374G, and SLC24A5 A111G are consistent with the FST results suggesting strong Europeans pecific divergence at these loci. The *derived allele* at TYR, 192*A (previously linked with lighter pigmentation [Shriver et al. 2003]), has a frequency of 38% among European populations but a frequency of only 14% among non-Europeans. The differences between Europeans and non-Europeans for the MATP 374*G and SLC24A5 111*A alleles (both derived alleles associated with lighter pigmentation) were even more striking (MATP European 5 87%; MATP non-European 5 17%; SLC24A5 European 5 100%; SLC24A5 non-European 5 46%). [b]The frequency of the SLC24A5 111*A allele outside of Europe is largely accounted for by high frequencies in geographically proximate populations in northern Africa, the Middle East, and Pakistan (ranging from 62% to 100%).[/b] The virtual absence of MATP 374*G–derived allele in the sub-Saharan African populations that we examined in the CEPH-Diversity Panel is consistent with the origin of this mutation outside of Africa after the divergence of modern Asians and Europeans. In contrast, the SLC24A5 111*A–derived allele is found at low frequencies in several sub-Saharan populations including the West African Mandenka and Yoruba, the Southern African San , and SouthWest Bantu. The relatively high frequencies of the derived allele in Central Asian, Middle Eastern, and North Africa seem likely to be due to gene flow with European populations. Similarly, the presence of the derived allele (albeit at low frequencies) in some sub-Saharan African populations may be due to recent gene flow from European and Central Asian populations.[/i] [/QB][/QUOTE]
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