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Thread: Genetic History of pre-contact Caribbean

  1. #1
    Advisor Angela's Avatar
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    02-01-11
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    Ethnic group
    Italian
    Country: USA - New York



    3 members found this post helpful.

    Genetic History of pre-contact Caribbean

    See:
    Fernandes and Reich

    https://www.nature.com/articles/s41586-020-03053-2

    "Abstract

    Humans settled the Caribbean about 6,000 years ago, and ceramic use and intensified agriculture mark a shift from the Archaic to the Ceramic Age at around 2,500 years ago1,2,3. Here we report genome-wide data from 174 ancient individuals from The Bahamas, Haiti and the Dominican Republic (collectively, Hispaniola), Puerto Rico, Curaçao and Venezuela, which we co-analysed with 89 previously published ancient individuals. Stone-tool-using Caribbean people, who first entered the Caribbean during the Archaic Age, derive from a deeply divergent population that is closest to Central and northern South American individuals; contrary to previous work4, we find no support for ancestry contributed by a population related to North American individuals. Archaic-related lineages were >98% replaced by a genetically homogeneous ceramic-using population related to speakers of languages in the Arawak family from northeast South America; these people moved through the Lesser Antilles and into the Greater Antilles at least 1,700 years ago, introducing ancestry that is still present. Ancient Caribbean people avoided close kin unions despite limited mate pools that reflect small effective population sizes, which we estimate to be a minimum of 500–1,500 and a maximum of 1,530–8,150 individuals on the combined islands of Puerto Rico and Hispaniola in the dozens of generations before the individuals who we analysed lived. Census sizes are unlikely to be more than tenfold larger than effective population sizes, so previous pan-Caribbean estimates of hundreds of thousands of people are too large5,6. Confirming a small and interconnected Ceramic Age population7, we detect 19 pairs of cross-island cousins, close relatives buried around 75 km apart in Hispaniola and low genetic differentiation across islands. Genetic continuity across transitions in pottery styles reveals that cultural changes during the Ceramic Age were not driven by migration of genetically differentiated groups from the mainland, but instead reflected interactions within an interconnected Caribbean world1,8."


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  2. #2
    Regular Member kingjohn's Avatar
    Join Date
    05-09-16
    Posts
    926

    Y-DNA haplogroup
    Presefardi -BY96055
    MtDNA haplogroup
    from plovdiv h3ap

    Country: Uruguay



    Thanks 👍
    i see in suplemental data
    Page 106
    Out of the new 96 ancient dna remains
    87 are in y haplogroup Q-m3
    Not surprising 😉


    P.s
    So it looks like the dominant y haplogroup
    Of native in those islands before
    The spanish conquistadors came 🤔
    Sefhardi, aschenazi, bulgarian
    die Überlebenden
    https://www.yfull.com/live/tree/E-Y62418/
    https://yfull.com/mtree/H3ap/
    k12b ancient
    Closest:
    3.30708331
    R136_Imperial_Era_Marcellino_&_Pietrophenotype: east med with pontic vibe

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