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Thread: Gene-flow from steppe individuals into Cucuteni-Trypillia associated populations

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    Gene-flow from steppe individuals into Cucuteni-Trypillia associated populations

    Gene-flow from steppe individuals into Cucuteni-Trypillia associated populations indicates long-standing contacts and gradual admixture

    Abstract

    The Cucuteni-Trypillia complex (CTC) flourished in eastern Europe for over two millennia (5100–2800 BCE) from the end of the Neolithic to the Early Bronze Age. Its vast distribution area encompassed modern-day eastern Romania, Moldova and western/central Ukraine. Due to a lack of existing burials throughout most of this time, only little is known about the people associated with this complex and their genetic composition. Here, we present genome-wide data generated from the skeletal remains of four females that were excavated from two Late CTC sites in Moldova (3500–3100 BCE). All individuals carried a large Neolithic-derived ancestry component and were genetically more closely related to Linear Pottery than to Anatolian farmers. Three of the specimens also showed considerable amounts of steppe-related ancestry, suggesting influx into the CTC gene-pool from people affiliated with, for instance, the Ukraine Mesolithic. The latter scenario is supported by archaeological evidence. Taken together, our results confirm that the steppe component arrived in eastern Europe farming communities maybe as early as 3500 BCE. In addition, they are in agreement with the hypothesis of ongoing contacts and gradual admixture between incoming steppe and local western populations.

    https://www.nature.com/articles/s41598-020-61190-0

    There is also a sample from Glavanesti
    Vechi (Romania) same time period and culture with R1a-Z93 and very Yamnaya-like and/or even Steppe_Maykop-like.
    Any thoughts on this early Steppe push into the CTC ?
    Last edited by Anfänger; 12-04-20 at 08:54. Reason: Forgot the link to the Paper

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    1 members found this post helpful.
    Here is the PCA plot. The Cucuteni samples are the red dots from Moldova (Gordinești, Pocrovca 1, Pocrovca 2, Pocrovca 3) and the blue dots from Verteba Cave in Ukraine (I1926, I2110, I2111, I3151). They are intermediary between the LBK + Anatolian Neolithic and Bell Beaker (although some German Bell Beaker samples fall right in the middle of the Cucuteni-Trypillian samples).





    The K=12 admixture plot show that the CTC samples had between 15 and 40% of WHG and 5 to 30% of Yamna - the remainder being Neolithic farmer.





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    =Unfortunately no Y-DNA...
    Sorry, I didn't put in the link to the R1a-Z93 sample but it was mentioned several times in other threads so thought it was known.
    But it is from here:

    https://genome.cshlp.org/content/30/3/427


    Carlos thoughts about this sample:
    https://indo-european.eu/2020/03/ful...e-trypillians/

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    Quote Originally Posted by Anfänger View Post
    Sorry, I didn't put in the link to the R1a-Z93 sample but it was mentioned several times in other threads so thought it was known.
    But it is from here:

    https://genome.cshlp.org/content/30/3/427
    Carlos thoughts about this sample:
    https://indo-european.eu/2020/03/ful...e-trypillians/
    I think that R1a-Z93 is not from Yamnaya but from Khvalynsk culture and Sredny Stog culture.

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