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Thread: Medieval genomes from Nubia

  1. #1
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    Medieval genomes from Nubia

    66 genomes from Nubia have been sequenced.

    We find that the Kulubnarti Nubians were admixed with ~43% Nilotic-related ancestry on average (individual proportions varied between ~36-54%) and the remaining ancestry reflecting a West Eurasian-related gene pool likely introduced into Nubia through Egypt, but ultimately deriving from an ancestry pool like that found in the Bronze and Iron Age Levant. The admixed ancestry at Kulubnarti reflects interactions between genetically-distinct people in northeast Africa spanning almost a millennium, with West Eurasian ancestry disproportionately associated with females, highlighting the impact of female mobility in this region.
    Basically these Nubians range between Somalis (55% SSA) and modern Egyptian SSA outliers.




    https://www.biorxiv.org/content/10.1...02.17.431423v1

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    Quote Originally Posted by Ramses View Post
    57% Levant Bronze age "Semitic"? alot of J1's , T's and G's ,R-L294 , alot of European Mtdna H2 and U5
    Of course I expected this Result it Match the Archeological and genetical record perfectly , Get prepared for 65% Levantine Bronze age Nubians..
    From what those more knowledgeable than me have said, it seems even Horners can be modeled as Levant BA derived in terms of our West Eurasian ancestry on qpadm.Nothing about this surprising but I think you are getting ahead of yourself in claiming that Ancient Nubia was 65% West Eurasian.Also the authors of this study claimed that it was female mediated which means they were probably rich in E-M78/M35 lineages imo especially E-V12 & V32 alongside paternal Nilo-Saharan haplogroups of A & B.

    Ancient DNA analysis of subadult specimens from these burial sites found that the mainland samples predominantly carried European and Near Eastern mtDNA clades, such as the K1, H, I5, and U1 lineages; only 36.4% of the mainland individuals belonged to African-based maternal haplogroups. By contrast, 70% of the specimens at the island burial site bore African-based clades, among which were the L2, L1 and L5 mtDNA haplogroups.
    Last edited by drobbah; 02-18-2021 at 02:59 AM.

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    The implications of this study is the vast majority of Sudanese Arabs & Nubians weren't really impacted by the Islamization and Bedouin Arab migrations

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    Quote Originally Posted by drobbah View Post
    The implications of this study is the vast majority of Sudanese Arabs & Nubians weren't really impacted by the Islamization and Bedouin Arab migrations
    We'll know more when the data is released but I think there may actually be significant Arab ancestry in modern Sudanese populations but in a mix of Kulubnarti-Like + East-Sahelian + Upper-Nile/Nilotic + Arab

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    The paper also noted that the West Eurasian admixture seems female mediated when looking at the X chromosomes (57.5 vs 64.4) as well, I wonder how that happened.

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    Quote Originally Posted by drobbah View Post
    The implications of this study is the vast majority of Sudanese Arabs & Nubians weren't really impacted by the Islamization and Bedouin Arab migrations
    The paper explicitly claims the opposite. The author states that they have relatively similar PCA positions to modern Nubians, but cannot be modeled the same way.
    Last edited by Mnemonics; 02-18-2021 at 04:05 AM.

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    Quote Originally Posted by Mnemonics View Post
    The paper explicitly claims the opposite. The author states that they have relatively similar PCA positions to modern Nubians, but cannot be modeled the same way.
    Wouldn't that mean the ancestors of the modern Nubians were more SSA than these medieval Nubians pre-arab admixture? Perhaps these Nubians were a dead end population but who knows.We will just have to wait and see

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    Quote Originally Posted by drobbah View Post
    Wouldn't that mean the ancestors of the modern Nubians were more SSA than these medieval Nubians pre-arab admixture? Perhaps these Nubians were a dead end population but who knows.We will just have to wait and see
    Could be that they gained more Nilotic and Bedouin-like ancestry, but I doubt that's the case considering that the model should still work if that were the true.

    Edit: I'm a bit annoyed that they didn't include which Eurasian haplogroups were found. Is it listed anywhere? I would assume T, J, G and R are the most likely haplogroups (maybe I too since it's present in some Sudanese groups).
    Last edited by Mnemonics; 02-18-2021 at 05:27 AM.

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    Finally! It's here!

    It will be very interesting to see if some of the SSA ancestry in Copts can be traced to these guys, as I have theorized much of their SSA affinity might have come from medieval Nubian Christians. Of course, there are other possibilities, especially if Copts also owned slaves during the Islamic period as some here have postulated.

    This would really be a good time to have some modern Nubian genomes in the G25. It's a shame we don't, because then we could model them ourselves when this Kulubnarti data becomes public.
    Ελευθερία ή θάνατος.

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    A part of me is nervous cuz they've merged Hollfelder's data as part of their final dataset so if they are using the same pipeline the samples will be of no use to the g25 like Hollfelder's Sudanese. Will have to wait and see but I'm not getting my hopes up.

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