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Thread: Do the South Sudanese like the Dinka have West Eurasian/North African admixture?

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    Do the South Sudanese like the Dinka have West Eurasian/North African admixture?

    Or are they 0% like the Yoruba & Mota?

    I ask because I noticed that they carry E-V22 at a moderate frequency and this lineage is relatively close to Greco-Illyrian-Levantine E-V13 as well as the lineage of the IberoMaurusians. It peaks in the Saho as well. So, I highly doubt it was carried by Nilotes originally.

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    Is Neanderthal admixture detected in them? Just wondering.

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    Recently, a Nuer person posting on the 23andme subreddit said they had 20 Neanderthal variants. That's all I can contribute.

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    Quote Originally Posted by Numidian View Post
    Recently, a Nuer person posting on the 23andme subreddit said they had 20 Neanderthal variants. That's all I can contribute.
    Interesting. I am sharing with one Southern North Sudanese (likely from a Nilotic ethnic group - I think Nuba) who has 48 Neanderthal variants.

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    Quote Originally Posted by NetNomad View Post
    Or are they 0% like the Yoruba & Mota?

    I ask because I noticed that they carry E-V22 at a moderate frequency and this lineage is relatively close to Greco-Illyrian-Levantine E-V13 as well as the lineage of the IberoMaurusians. It peaks in the Saho as well. So, I highly doubt it was carried by Nilotes originally.
    Yoruba and Mota are not 0%. That's not all either

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    Quote Originally Posted by Chad Rohlfsen View Post
    Yoruba and Mota are not 0%. That's not all either
    Can you please elaborate?

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    Quote Originally Posted by NetNomad View Post
    carry E-V22 at a moderate frequency and this lineage is relatively close to Greco-Illyrian-Levantine E-V13 as well as the lineage of the IberoMaurusians.
    E-V22 seems to be very widespread in the Middle East. Apparently Ramesses III was E-V22 according to some site that analysed his y-STR results.
    Maybe Ancient Egyptians spread it in their immediate neighbourhood down south, along with the West Eurasian auDNA.

  9. #8

    Fig 3. Maps showing the amount of Nilotic and Eurasian admixture and admixture dates in investigated populations (Hollfelder et al. 2017).

    South Sudan is colored in deep purple in Fig 3B, which shows estimated non-African (using a European group) admixture in Sudanese populations. The ratio of Eurasian admixture in South Sudan is comparably lower (less than 10%) compared to the Nubians but not completely absent. Nubian populations are estimated to be 39.41%-47.73% Eurasian due to the Eurasian admixture into the Nubians.

    Nubians are an admixed group with gene-flow from outside of Africa

    The strongest signal of admixture into Nubian populations came from Eurasian populations (S10 Fig, S2 Table) and was likely quite extensive: 39.41%-47.73% (f4-ratio, Z-scores between 22.8 and 26.7 Fig 3B, S9 Fig). Interestingly, the Nubians showed the highest level of allelic richness, number of private alleles and shared private alleles (ADZE, between Danagla and Halfawieen, S12 Fig) among all Sudanese and South Sudanese groups. This observation together with a smaller total length of runs of homozygosity, between lengths of 0.5–1 kilobases, points to substantial admixture in Nubians (Fig 4). Hence, the Nubians can be seen as a group with substantial genetic material relating to Nilotes that later have received much gene-flow from Eurasians (likely Middle Eastern) and from East Africans (Fig 2).

    From historic documents, we know that the ancient Egyptians were in contact with the ancient Nubians that inhabited the Nile area in the north of modern-day Sudan. Our study suggests that the later migration followed along the Nile, likely being held up by the Nubians until the fall of the Kingdom of Makuria in the 14th Century [4]. Following that historic event, the Arab expansion spread further southward, which can be seen in a succession of admixture events that occur more recent in time as one travels south. Many populations in Sudan that self-identity as Arab, displayed a population history of local Sudanese populations that have admixed with incoming Eurasian populations, and adopted the language and culture of the incoming migrants. In fact most populations from northeast Sudan (Nubian, Arab and Beja groups) seem to be a mixture of Middle Eastern and local northeast African genetic components, although only the Arab groups shifted to the Semitic languages. Cultural and linguistic replacement following the Arab conquest has been described previously in populations of the Maghreb [37, 38, 43].

    The Eurasian admixture had less impact on the populations of western Sudan and South Sudan. The Darfurian and Kordofanian populations showed overall less admixture from non-African groups than the northeastern populations (and the limited admixture that does exist is more recent in time). The Nilotic populations have stayed largely un-admixed, which appears to be the case in Ethiopia too, where a similar observation has been made for the Gumuz [23, 44], an Ethiopian Nilotic population that is genetically similar to South Sudan Nilotes. Northeast African Nilotes showed some distinction from an ancient Ethiopian individual (Mota, found in the Mota Cave in the southern Ethiopian highlands), which suggests population structure between northeast and eastern Africa already 4,500 years ago. The modern-day Nilotic groups are likely direct descendants of past populations living in northeast Africa many thousands of years ago.

    https://journals.plos.org/plosgeneti...l.pgen.1006976
    Last edited by ThirdTerm; 01-09-2019 at 05:49 AM.
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    Quote Originally Posted by thejkhan View Post
    E-V22 seems to be very widespread in the Middle East. Apparently Ramesses III was E-V22 according to some site that analysed his y-STR results.
    Maybe Ancient Egyptians spread it in their immediate neighbourhood down south, along with the West Eurasian auDNA.
    Yeah, but the 'original'/first population that had E-V22 must have been autosomally similar to the IberoMaurusians (clustering somewhere around North Africans).

    During the Green Sahara E-M78 spread all over the place.

    Also, some Nilotic A-M13 lineages spread to the Mediterranean (multi-directional geneflow):

    https://www.yfull.com/tree/A-M13/

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    Quote Originally Posted by NetNomad View Post
    Yeah, but the 'original'/first population that had E-V22 must have been autosomally similar to the IberoMaurusians (clustering somewhere around North Africans).
    No doubt much of the West Eurasian clades of E owe their origin to Ibero-Maurusians (ANA). That's because some ANA made it to Levant and assimilated into the Natufians.

    E clades found in large numbers in Middle East, Near East or Europe are probably all associated with the spread of farming, along with the Natufian component that the farmers carried.

    That's why I am speculating that E-V22 was part of a reverse migration back into North East Africa, followed by expansion towards SSA.

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