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Thread: Admixture between early LBK and HGs

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    2 out of 3 members found this post helpful.

    Admixture between early LBK and HGs

    See:
    Alexei Nikitin et al (plus Reich and Lazaridis)
    https://www.biorxiv.org/content/bior...41900.full.pdf
    "Interactions between earliest Linearbandkeramik farmers and central European hunter gatherers at the dawn of European Neolithization"

    "Archaeogenetic research over the last decade has demonstrated that European Neolithic farmers (ENFs) were descended primarily from Anatolian Neolithic farmers (ANFs). ENFs, including early Neolithic central European Linearbandkeramik (LBK) farming communities, also harbored ancestry from European Mesolithic hunter gatherers (WHGs) to varying extents, reflecting admixture between ENFs and WHGs. However, the timing and other details of this process are still imperfectly understood. In this report, we provide a bioarchaeological analysis of three individuals interred at the Brunn 2 site of the Brunn am Gebirge-Wolfholz archeological complex, one of the oldest LBK sites in central Europe. Two of the individuals had a mixture of WHG-related and ANF-related ancestry, one of them with approximately 50% of each, while the third individual had approximately all ANF-related ancestry. Stable carbon and nitrogen isotope ratios for all three individuals were within the range of variation reflecting diets of other Neolithic agrarian populations. Strontium isotope analysis revealed that the ~50% WHG-ANF individual was non-local to the Brunn 2 area. Overall, our data indicate interbreeding between incoming farmers, whose ancestors ultimately came from western Anatolia, and local HGs, starting within the first few generations of the arrival of the former in central Europe, as well as highlighting the integrative nature and composition of the early LBK communities."

    I think they're probably right, but I'm not sure three samples are enough for conclusive findings.

    It's interesting to see how spotty it was, with one sample having no HG, one being half and half, and one having some HG. Of course, the eventual outcome was a group with not very much HG, not like MN farmers.

    It's a lesson in not being too dogmatic about long term effects on the genome of an area of some admixture results from an early stage and one area.



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    afaik LBK farmers had the least WHG admixture - some 5%

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    That's interesting. I will certainly read it.

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    The presentation and discussion of articles like this are why I remain with eupedia.com. I look forward to the commentary to come (I'm truly not qualified to comment).

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    0 out of 1 members found this post helpful.
    Quote Originally Posted by bicicleur View Post
    afaik LBK farmers had the least WHG admixture - some 5%
    That's my understanding too, but we only know that because we have a lot of WHG samples, and about 5% is what it averages out to be.

    If this group of LBK people were the first ones we found, we might have been led to believe that there was a lot of admixture in this very early Neolithic group, while it's actually not the case at all.

    That has implications for other papers, and the perhaps hasty decisions we reach about the nature of people in certain areas and time periods. Think of the Parma North Italian Beakers. We have, what, three of them? How representative of the people of Northern Italy at that time will they turn out to be?

    https://www.eupedia.com/forum/thread...=Parma+Beakers

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