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Thread: Home Sapiens came earlier than we previously thought

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    Home Sapiens came earlier than we previously thought



    See this interesting article in Science:

    "Southern African Ancient Genomes Estimate Modern Human Divergence to 350,000 to 260,000 Years Ago"

    Abstract

    Southern Africa is consistently placed as a potential region for the evolution of Homo sapiens. We present genome sequences, up to 13x coverage, from seven ancient individuals from KwaZulu-Natal, South Africa. Three Stone Age hunter-gatherers (about 2000 years old) were genetically similar to current-day southern San groups, while four Iron Age farmers (300 to 500 years old) were genetically similar to present-day Bantu-speakers. We estimate that all modern-day Khoe-San groups have been influenced by 9 to 30% genetic admixture from East Africans/Eurasians. Using traditional and new approaches, we estimate the first modern human population divergence time to between 350,000 and 260,000 years ago. This estimate increases the deepest divergence among modern humans, coinciding with anatomical developments of archaic humans into modern humans as represented in the local fossil record.
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    Interesting, so even older than the one found in Jebel Irhoud.

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    it all depends how you define 'modern humans'
    the new definition of 'modern humans' seems to apply to all humans in Africa after the split with the common ancestor of Neanderthals and Denisovans, some 600 ka
    there is a single Adam in the Y-DNA and a single Eve in the mtDNA, but that does not apply to autosomal

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    If I recall well, the Khoisan didn't diverge from modern humans 300 ka.
    They are an admixture of a tribe that lived in South-Africa since more than 300 ka with (a) new, much more recent (100 ka? 50 ka?) incoming tribe(s) of modern humans from northeastern Africa. Their Y-DNA was A1b1.

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