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Ancient Tanzanian Pastoralist results... VERY interesting stuff!
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[QUOTE]Originally posted by Djehuti: [QB] [QUOTE]Originally posted by Elite Diasporan: [qb] But first shout outs to Djehuti. You were right on the money. Anyways... http://www.cell.com/cell/fulltext/S0092-86741731008-5 Many on the site Forumbiodiversity were certain this pastoralist would be more "Cushite-Like" with lineages like E-V22/M1 instead we get what I call "true Bantu Negroid" L2a1. Here is the summary- [QUOTE]We assembled genome-wide data from 16 prehistoric Africans. We show that the anciently divergent lineage that comprises the primary ancestry of the southern African San had a wider distribution in the past, contributing approximately two-thirds of the ancestry of Malawi hunter-gatherers ∼8,100–2,500 years ago and approximately one-third of the ancestry of Tanzanian hunter-gatherers ∼1,400 years ago. We document how the spread of farmers from western Africa involved complete replacement of local hunter-gatherers in some regions, and we track the spread of herders by showing that the population of a ∼3,100-year-old pastoralist from Tanzania contributed ancestry to people from northeastern to southern Africa, including a ∼1,200-year-old southern African pastoralist. The deepest diversifications of African lineages were complex, involving either repeated gene flow among geographically disparate groups or a lineage more deeply diverging than that of the San contributing more to some western African populations than to others. We finally leverage ancient genomes to document episodes of natural selection in southern African populations.[/QUOTE]Thoughts? [/qb][/QUOTE]Sorry for the late response. I just got through reading the paper and it's really nothing surprising. A lot of genetic diversity has been lost since the Holocene not only in Africa but throughout the world via the spread of food producing populations which either replaced or subsumed other groups. By the way Elite, E-V22/M1 is a male lineage found in the Y-chromosome while L2a1 is a female lineage found in mitochondria. The Luxmanda specimen is female so she doesn't have any Y chromosome. That said, it is interesting to note that most of the ancient Y chromosomes found from males in the sites are A or B and not E derived. I have to agree with Punos Rey that this common ancestry that Luxmanda had associated with the neolithic Levant may very well be the so-called "basal Eurasian", and that such ancestry may very well be indigenous to Africa instead of Eurasia. Check out Swenet's blog page on that topic [URL=http://egyptsearchdetoxed.blogspot.com/2016/07/why-basal-eurasian-is-still-african-as.html]here[/URL]. As far as Somali having 16% ± 3% Iranian-Neolithic-related ancestry, this too is no surprise considering the presence of paternal lineage hg T in Somalia and other parts of the Horn. T is derived from [URL=https://en.wikipedia.org/wiki/Haplogroup_LT]hg LT[/URL] and is a sibling of hg L which is predominantly found in India and Iran. Interestingly while T is also found in India and traces are found throughout western Eurasia, the highest frequency is found in the Horn. [/QB][/QUOTE]
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