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Thread: Northeast African genomic variation shaped by the continuity of indigenous groups and Eurasian migrations778 days old

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    Default Northeast African genomic variation shaped by the continuity of indigenous groups and Eurasian migrations

    Northeast African genomic variation shaped by the continuity of indigenous groups and Eurasian migrations

    Abstract

    Northeast Africa has a long history of human habitation, with fossil-finds from the earliest anatomically modern humans, and housing ancient civilizations. The region is also the gate-way out of Africa, as well as a portal for migration into Africa from Eurasia via the Middle East and the Arabian Peninsula. We investigate the population history of northeast Africa by genotyping ~3.9 million SNPs in 221 individuals from 18 populations sampled in Sudan and South Sudan and combine this data with published genome-wide data from surrounding areas. We find a strong genetic divide between the populations from the northeastern parts of the region (Nubians, central Arab populations, and the Beja) and populations towards the west and south (Nilotes, Darfur and Kordofan populations). This differentiation is mainly caused by a large Eurasian ancestry component of the northeast populations likely driven by migration of Middle Eastern groups followed by admixture that affected the local populations in a north-to-south succession of events. Genetic evidence points to an early admixture event in the Nubians, concurrent with historical contact between North Sudanese and Arab groups. We estimate the admixture in current-day Sudanese Arab populations to about 700 years ago, coinciding with the fall of Dongola in 1315/1316 AD, a wave of admixture that reached the Darfurian/Kordofanian populations some 400–200 years ago. In contrast to the northeastern populations, the current-day Nilotic populations from the south of the region display little or no admixture from Eurasian groups indicating long-term isolation and population continuity in these areas of northeast Africa.

    http://journals.plos.org/plosgenetic...l.pgen.1006976
    We Wuz Kerma Kangz delusion..........

    Quote Originally Posted by Meygaag View Post
    You @beyoku @HabariTess @Roseai are the ones claiming people that have nothing to do with them.I'm a Cushitic descendant of the Sudan and an heir to all it's civilizations while you descend from Ebola stricken negroes from the Congo forest that eat albinos in order to gain superpowers lmao

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    I wonder what this means....
    We estimate the admixture in current-day Sudanese Arab populations to about 700 years ago, coinciding with the fall of Dongola in 1315/1316 AD, a wave of admixture that reached the Darfurian/Kordofanian populations some 400–200 years ago.

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    Quote Originally Posted by BlessedbyHorus View Post
    I wonder what this means....
    It seemingly means the pipe tale about North Sudanese and Southern Egyptians (at least) being "100% Eurasian until an elusive migration of negroes" became a lot less likely. The event itself probably marks the fall of cultural stability and the beginning of a Middle Eastern cultural hold on Sudan. [/Still reading]
    Last edited by Itoli; 2017-08-26 at 19:41.

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    Quote Originally Posted by Itoli View Post
    It seemingly means the pipe tale about North Sudanese and Southern Egyptians (at least) being "100% Eurasian until an elusive migration of negroes" became a lot less likely. The event itself probably marks the fall of cultural stability and the beginning of a Middle Eastern cultural hold on Sudan. [/Still reading]
    Yep. They're basically repeating what Pagani said. But I wonder WHICH "Eurasian" ancestry are they talking about. Just their Gulf Arab ancestry or all their Eurasian ancestry[including any Levantine]? If that makes any sense.

    I'm also glad they use historical context.

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    Quote Originally Posted by BlessedbyHorus View Post
    Yep. They're basically repeating what Pagani said. But I wonder WHICH "Eurasian" ancestry are they talking about. Just their Gulf Arab ancestry or all their Eurasian ancestry[including any Levantine]? If that makes any sense.

    I'm also glad they use historical context.
    These were the populations studied and their geographic affiliation::


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    Quote Originally Posted by Itoli View Post
    These were the populations studied and their geographic affiliation::

    Yeah I seen this when I read through again. Did you read this part?
    Our results instead indicate that they are an admixed population of at least one sub-Saharan population and one Eurasian population, but had subsequent admixture with additional groups. The population tree that has the most support finds the Nuer (Nilotic) as an outgroup to the Bedouin and Copts (D(Juhoansi,Nuer;Bedouin,Copts) = 0.0103, Z = 5.550). The Copts were estimated to be of 69.54% +/- 2.57 European ancestry and the Egyptians of 70.65% +/- 2.47 European ancestry.
    Last edited by BlessedbyHorus; 2017-08-26 at 22:20.

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    Quote Originally Posted by BlessedbyHorus View Post
    Yeah I seen this when I read through again. Did you read this part?
    Yeah the part that confuses me is "European" ancestry. I have to go through this again...

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    Quote Originally Posted by Itoli View Post
    Yeah the part that confuses me is "European" ancestry. I have to go through this again...
    That part confused me too.

    @El-Maestro

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    This study in a lot of ways refutes the study on Abusir mummies on Eurasian mixture coming into Egypt, though they are not estimating the time of Eurasian admixture into Egypt.
    We Wuz Kerma Kangz delusion..........

    Quote Originally Posted by Meygaag View Post
    You @beyoku @HabariTess @Roseai are the ones claiming people that have nothing to do with them.I'm a Cushitic descendant of the Sudan and an heir to all it's civilizations while you descend from Ebola stricken negroes from the Congo forest that eat albinos in order to gain superpowers lmao

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    Too bad no Y-DNA. I think it's somewhat crucial to see the difference between southern Egyptians and Sudanese.....especially the Halfan sample. I think it has big implications for V1515 and V68, their Red Sea vs Eastern Saharan theories.

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    Quote Originally Posted by Game Theory View Post
    This study in a lot of ways refutes the study on Abusir mummies on Eurasian mixture coming into Egypt, though they are not estimating the time of Eurasian admixture into Egypt.
    How does this study refute a study based on ancient DNA?

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