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The genetic structure of the world’s first farmers - Iosif Lazaridis
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[QUOTE]Originally posted by Elmaestro: [QB] [QUOTE]Originally posted by the lioness,: [b][1][/b] The Copts of Egypt have distinct genetics from the Arab majority, with a lower degree of Middle Eastern ancestry and higher levels of North African and sub-Saharan African genetics. A 2008 study of a Copts of Egyptian descent (though living in Sudan) found relatively high frequencies of the Sub-Saharan Haplogroup B. According to the study, the presence of Sub-Saharan haplogroups may also be consistent with the historical record in which southern Egypt was colonized by Nilotic populations during the early state formation. A 2015 study by Dobon et al. identified an ancestral autosomal component of West Eurasian origin that is common to many modern Afroasiatic-speaking populations in Northeast Africa, including Somalis and Sudanese. Known as the Coptic component, it peaks among Egyptian Copts who settled in Sudan over the past two centuries; but it is also found among Copts living in Northern and Southern Egypt. Copts also formed a separated group in PCA, a close outlier to other Egyptians, Northeast Africans and Middle East populations. The Coptic component evolved out of a main Northeast African and Middle Eastern ancestral component that is shared by other Egyptians and also found at high frequencies among other Afro-Asiatic populations in Northeast Africa (~70%), such as Somalis and Sudanese. The scientists suggest that this points to a common origin for the general population of Egypt. They also associate the Coptic component with Ancient Egyptian ancestry, without the later Arabian influence that is present among other Egyptians __________________________________ http://www.nature.com/articles/srep09996 2015 [b]The genetics of East African populations: a Nilo-Saharan component in the African genetic landscape[/b] Begoña Dobon, Hisham Y. Hassan, Hafid Laayouni, Pierre Luisi, Isis Ricaño-Ponce, Alexandra Zhernakova, Cisca Wijmenga, Hanan Tahir, David Comas, Mihai G. Netea & Jaume Bertranpetit Scientific Reports 5, Article number: 9996 (2015) [b]The North African/Middle Eastern genetic component is identified especially in Copts. The Coptic population present in Sudan is an example of a recent migration from Egypt over the past two centuries. They are close to Egyptians in the PCA, but remain a differentiated cluster, showing their own component at k = 4 (Fig. 3). Copts lack the influence found in Egyptians from Qatar, an Arabic population. It may suggest that Copts have a genetic composition that could resemble the ancestral Egyptian population, without the present strong Arab influence.[/b] [b][2][/b] also, ease up on the Hinduism [/QUOTE][b][1.][/b] You're saying this to tell me what exactly? I was already aware of this when I read and spoke about Dobons research. I would like for you to tell me when exactly E-M78 was introduced to the Sudanese Nilotics though, that would be helpful... BTW, Where does J1 Originate? [b][2.][/b] ...I don't get the joke. [/QB][/QUOTE]
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