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Thread: DISCUSSION THREAD FOR "Genetic Genealogy and Ancient DNA in the News"

  1. #2421
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    Random question I was hoping someone might be able to help me with.

    Is there any evidence of European hunter-gatherer admixture into Anatolian hunter-gatherer or farmer populations in Anatolia prior to the expansion of farmers across Europe?

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    Quote Originally Posted by parasar View Post
    Coincidentally we were just discussing J2b2 in eastern India.

    So now where do we suppose the contacts between Indo-Aryan and Finno-Uralic happened? Baltic, the Urals, Siberia?
    In the Hanseatic League?

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  5. #2423
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    Quote Originally Posted by Kale View Post
    Both IK002 and the Hoabinian HG are in the Reichlab 37.2 release. They don't seem to share any special connection...
    F3: Hoabinhian Jomon Mbuti.DG = 0.255259
    F3: Hoabinhian Nepal_ancient Mbuti.DG = 0.254203
    F3: Hoabinhian XiongNu Mbuti.DG = 0.253654
    F3: Hoabinhian Baikal_EN Mbuti.DG = 0.253428
    These are all within 1 std. error as far as F3's go.
    Though evidently Jomon related populations did extend as far South as Taiwan at some point apparently, the lack of special relation to Hoabinhian would suggest against an ultimately Southern origin of Jomon would it not?
    It appears the distance between Jomon/Austronesian-like, Sherpa-like, Hoabhinian-like, and Onge-like East Eurasians is due mostly to isolation by distance from one another following the initial peopling of East Eurasia by a single branch ~40kya. This would imply the first 30k years of human occupation in SE Eurasia was marked by fairly persistent boundaries between competing hunter-gatherer groups, allowing them to drift/differentiate from one another, before the Neolithic had a "leveling" effect in bringing these groups closer together via admixture. I think this may have always been the dominant view, but it seems to rebuke old theories involving a "two-pronged" colonization from the main East Eurasian trunk, with one wave following the coastal/Indian Ocean route and another wave going over the Altai range.

    One interesting aspect of the paper's model relates to Northeast Eurasians: not only Native Americans receive the familiar ~35-40% ANE ancestry-- but also the Mongolian-like Shamanka_EN gets ~12% ANE ancestry, although the Ulchi-like DevilsCave appears to lack this ANE?

    Last edited by K33; 05-14-2019 at 10:37 PM.

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  7. #2424
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    Quote Originally Posted by ADW_1981 View Post
    I really don't think J2b has anything to do with anything in this case, considering its 1600 AD Baltic. There were plenty of other Y HG a mere 400 years ago in the region. It's certainly a red herring.
    Maybe, maybe not.
    After we have some type of J in >5000BC Karelia.

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  9. #2425
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    Quote Originally Posted by parasar View Post
    Maybe, maybe not.
    After we have some type of J in >5000BC Karelia.
    The J from Mesolithic Karelia is a type of J1.

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    Quote Originally Posted by Philjames View Post
    Random question I was hoping someone might be able to help me with.

    Is there any evidence of European hunter-gatherer admixture into Anatolian hunter-gatherer or farmer populations in Anatolia prior to the expansion of farmers across Europe?
    Check this paper on why the special relationship between Iron gates HG's and Anatolian HG's can't have been Anatolia > Iron gates. See the section called "Genetic links between Pleistocene Europe and the Near East".
    Last edited by epoch; 05-15-2019 at 01:59 PM.

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  13. #2427
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    Quote Originally Posted by J Man View Post
    The J from Mesolithic Karelia is a type of J1.
    Yes both Karelia and Popovo 2 are on the J1 line.
    https://genetiker.wordpress.com/y-snp-calls-for-i0211/
    https://genetiker.wordpress.com/y-sn...-for-popovo-2/

    Also
    https://genetiker.wordpress.com/y-sn...nter-gatherer/

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  15. #2428
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    Quote Originally Posted by Philjames View Post
    Random question I was hoping someone might be able to help me with.

    Is there any evidence of European hunter-gatherer admixture into Anatolian hunter-gatherer or farmer populations in Anatolia prior to the expansion of farmers across Europe?
    I entertain myself with this theory that the Campanian Eruption cleared the Eastern Mediterranean and the area was recolonized from the north by European groups, and that this explains the Middle-Eastern affinity with the Middle-East and explains the disappearance of Oase 1 ancestry. It also would be tied to the appearance of the Levantine Aurignacian.

    EDIT: I just now see that Ostuni1 has a relevant affinity to AHG. See figure 3.

    EDIT2: No idea about the validity of the theory, though, and I am merely an amateur.
    Last edited by epoch; 05-15-2019 at 04:16 PM.

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  17. #2429
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    Quote Originally Posted by Philjames View Post
    ...

    Is there any evidence of European hunter-gatherer admixture into Anatolian hunter-gatherer or farmer populations in Anatolia prior to the expansion of farmers across Europe?
    From the Aegean Greeks from Greece who were a lower WHG version of the Aegean Greeks from Anatolia.
    https://www.pnas.org/content/113/25/6886

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    Abstract
    Ancient DNA reveals a multi-step spread of food production into eastern Africa Food production spread into Eastern Africa beginning ~5000 years ago, transforming economic and social landscapes into a mosaic of foragers, herders, and later, farmers.

    Mary Prendergast, Elizabeth Sawchuck, Mark Lipson, Christine Ogola, Emmanuel Ndiema, Fredrick Kyalo Manthi, David Reich

    Complex exchanges among foragers and food producers have made it difficult to discern how these processes unfolded, and to determine the extent to which people moved with domestic animals and plants. In order to examine the genetic impacts of the spreads of herding and farming, we analysed genome-wide data from 41 individuals buried in association with Later Stone Age, Pastoral Neolithic (PN), and Iron Age contexts in what are now Kenya and Tanzania Our results support a multi-phase model in which admixture between northeastern African-related peoples and eastern African foragers formed multiple pastoralist groups, including a genetically homogeneous PN cluster. Additional admixture with northeastern and western African-related groups occurred by the Iron Age.. These findings support several movements of food producers, while rejecting previous suggestions of minimal admixture with foragers and of genetic differentiation between makers of distinct PN artifactual traditions. Ancient DNA offers a new source of information about eastern African Holocene prehistory, and an important next direction is to integrate this information rigorously with insights provided by the longer-established disciplines of archaeology and linguistics.

    It's great to see an archaeologist lead aDNA paper from Africa, hopefully multi-site sampling over millenia in specific regions becomes the norm going forward. Two things of particular interest to me: the Later Stone Age samples. particularly fisher-gatherers from Lothagam and the wider Rift valley from 6000-9000BP and how they relate to Mota and modern-day Nilotes could provide insights in to the populations responsible for the proliferation of wavy-line pottery further north. Also, the pastoralist remains from Lothagam (~5300BP) would be informative about the earliest cushitic-speakers.

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