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Thread: Why do Arabians carry low Anatolian ancestry compared to Middle Easterners & Egyptian

  1. #11
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    Oddly enough groups like Yemenite Amran,Yemenite Jews and on average most of those Yemeni samples except the Mahra are a lot more Barcin admixed than the Saudi & BedouinB samples.The Amran samples are clearly the most Levantine shifted Arabians on G25

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    Quote Originally Posted by Aleph View Post
    The Levantines themselves became Anatolian enriched in the first instance at least by the PPNB period. There isn't any published Levantine PPNA DNA that I know of, so IDK if they arrived in the PPNA. But it looks like the Anatolian ancestry, or at least the first iteration of it arrived between the Natufian and PPNB period. This wave probably didn't make it to Arabia itself, and the Anatolian ancestry might have been dispersed into Arabia later on indirectly. There isn't a long ancient DNA record from Arabia, so again, it is hard to tell when and how the small amount of Anatolian ancestry in Gulf Arabs arrived, but it definitely is a lot lower than the amount found in the Levant.
    One interesting observation is the higher frequency of lactose tolerance in Arabian-proper populations than in Levantine populations. This could be indicative of a difference in selection pressures due to the different neolithic subsistence strategies. Maybe a group managed to successfully set up its own alternative to the PPNB cultures of the Levant involving a heavier focus on pastoralism, or maybe instead the Arabian groups inherited aspects of the PPNB tradition (along with minor admixture) which they shaped into a more pastoralist heavy tradition.

    PS: A more stark contrast between Levantines and Arabians emerges if you use Barcin neolithic instead of copper age, since iirc, the copper age has more Iranian admixture.
    Arabs first appeared in the Levant as mercenaries for the Egyptians, first recorded as being captured by the Assyrians ...............it would appear, as you say , there is a stark contrast between Levant people and Arabs


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  4. #13
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    Quote Originally Posted by drobbah View Post
    Oddly enough groups like Yemenite Amran,Yemenite Jews and on average most of those Yemeni samples except the Mahra are a lot more Barcin admixed than the Saudi & BedouinB samples.The Amran samples are clearly the most Levantine shifted Arabians on G25
    How do you think that came to be? I don't know about the history and prehistory of Yemen specifically so I don't know. So I did what someone else who knew more about Yemen probably wouldn't do and ran Yemenites as a mix of Saudis and Fars Iranians. Amran is indeed the most Iranian-shifted, but IDK if there is any actual Iranian ancestry in them or if this is simply an indication of Amran having more of the Anatolian-enriched ancestry than others, for which Fars is simply a stand-in/proxy (at least a closer one than the Saudi input).

    Target,Distance,Iranian_Fars,Saudi
    Yemenite_Al_Bayda,0.02401862,6.4,93.6
    Yemenite_Al_Jawf,0.01739337,1.6,98.4
    Yemenite_Amran,0.02139678,16.6,83.4
    Yemenite_Dhamar,0.02842057,7.4,92.6
    Yemenite_Jew,0.01703632,5.4,94.6
    Yemenite_Ma'rib,0.02159852,3.6,96.4
    Yemenite_Mahra,0.02216496,0.0,100.0
    Average,0.02171845,5.9,94.1

    ancient run in comparison:

    Target,Distance,GEO_CHG,IRN_Ganj_Dareh_N,Levant_Na tufian,TUR_Boncuklu_N
    Yemenite_Al_Bayda,0.05112997,0.0,19.6,68.2,12.2
    Yemenite_Al_Jawf,0.06268225,0.8,16.6,69.6,13.0
    Yemenite_Amran,0.04848414,3.6,19.6,61.2,15.6
    Yemenite_Dhamar,0.05166921,4.6,15.4,68.0,12.0
    Yemenite_Jew,0.06372707,5.8,14.2,68.0,12.0
    Yemenite_Ma'rib,0.05886317,2.6,15.8,68.6,13.0
    Yemenite_Mahra,0.06162411,0.0,15.4,75.4,9.2
    Average,0.05688285,2.5,16.7,68.4,12.4

    and since idk about the history, I just made another one with Turks as an input:

    Target,Distance,Iranian_Fars,Saudi,Turkish_Central
    Yemenite_Al_Bayda,0.02397244,3.8,93.4,2.8
    Yemenite_Al_Jawf,0.01706980,0.0,97.4,2.6
    Yemenite_Amran,0.02067740,7.2,82.6,10.2
    Yemenite_Dhamar,0.02774473,0.0,91.4,8.6
    Yemenite_Jew,0.01658215,0.0,94.0,6.0
    Yemenite_Ma'rib,0.02107450,0.0,95.4,4.6
    Yemenite_Mahra,0.02216496,0.0,100.0,0.0
    Average,0.02132657,1.6,93.5,5.0

    Whatever the case is, you are right about Mahra being the most similar Yeminites to Saudis and Amran being the most different.

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    Quote Originally Posted by drobbah View Post
    Oddly enough groups like Yemenite Amran,Yemenite Jews and on average most of those Yemeni samples except the Mahra are a lot more Barcin admixed than the Saudi & BedouinB samples.The Amran samples are clearly the most Levantine shifted Arabians on G25
    Anatolian N groups were attracted to agricultural regions it seems. West/North Yemen has the most agricultural lands in Arabia. Mahra region is quite dry and far from these farming areas.

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  8. #15
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    The spread of Anatolian genes was largely due to farming. The fertile crescent is fertile after all. The people of the Arabian peninsula were pastoralists and traders.

  9. #16
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    It's likely, according to many, that Natufian-like peoples inhabited Arabia since the paleolithic, and that Levant_BA (from the southern Levant that is, to explain their lesser Anatolian ancestry) admixture was introduced by Levantine nomads like the Amorites and Arabs during the middle and late Bronze Age respectively.

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