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  • 16,000 ancient Modern human genomes

    From RonO@rokimoto557@gmail.com to talk-origins on Wed Apr 15 10:51:30 2026
    From Newsgroup: talk.origins

    https://www.science.org/content/article/ten-thousand-years-ago-human-evolution-went-overdrive

    https://www.nature.com/articles/s41586-026-10358-1

    These researchers added 10,000 new genome sequences to the population analysis. The samples are concentrated from Europe and the Middle East
    within the last 18,000 years. They claim that they see rapid evolution
    in the last 10,000 years. I haven't read the paper, but their figures indicate that most of the genes affected by selection seem to be immune related genes (like MHC) and pigmentation genes (like tyrosinase). You
    expect rapid allele frequency shifts because of the multiple population replacement events that occurred in Europe since the Neanderthal were eliminated from Europe. Otzi the ice man's hunter gatherer people were
    pretty much eliminated from Europe around 6,000 years ago when
    agriculture took over. Their genetics only survive in some mountainous regions and Mediterranean islands. I do not know how they compensated
    for population replacement and mixing that occurred with the Bronze age migration into Europe.

    Basically they have a lot of genome sequences, and they seem to have
    enough samples to make their claims.

    Ron Okimoto

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  • From RonO@rokimoto557@gmail.com to talk-origins on Thu Apr 16 12:22:31 2026
    From Newsgroup: talk.origins

    On 4/15/2026 10:51 AM, RonO wrote:
    https://www.science.org/content/article/ten-thousand-years-ago-human- evolution-went-overdrive

    https://www.nature.com/articles/s41586-026-10358-1

    These researchers added 10,000 new genome sequences to the population analysis.-a The samples are concentrated from Europe and the Middle East within the last 18,000 years.-a They claim that they see rapid evolution
    in the last 10,000 years.-a I haven't read the paper, but their figures indicate that most of the genes affected by selection seem to be immune related genes (like MHC) and pigmentation genes (like tyrosinase).-a You expect rapid allele frequency shifts because of the multiple population replacement events that occurred in Europe since the Neanderthal were eliminated from Europe.-a Otzi the ice man's hunter gatherer people were pretty much eliminated from Europe around 6,000 years ago when
    agriculture took over.-a Their genetics only survive in some mountainous regions and Mediterranean islands.-a I do not know how they compensated
    for population replacement and mixing that occurred with the Bronze age migration into Europe.

    Basically they have a lot of genome sequences, and they seem to have
    enough samples to make their claims.

    Ron Okimoto

    https://www.theguardian.com/science/2026/apr/16/red-hair-gene-favoured-natural-selection-study

    The Guardian has noted that the red hair alleles (there are about a
    dozen of them) have increased in frequency over the last 10,000 years.
    Many of these alleles are associated with skin cancer because they favor pheomelanin (red pigment) melanosome production. Eumelanin (black
    pigment) protects the skin against UV but pheomelanin produces reactive
    oxygen species upon UV irradiation that mess up proteins and can mutate
    the DNA. Red haired pale skinned humans may produce more vitamin D in
    their skin, but there are negative consequences. Some think that red
    hair became more common due to sexual selection.

    Ron Okimoto

    --- Synchronet 3.21f-Linux NewsLink 1.2