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Thread: Haplogroup B (and subclades) frequencies by populations and by regions

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    Post Haplogroup B (and subclades) frequencies by populations and by regions

    It seems, that this haplogroup is most frequent among Mbuti and Biaka Pygmies - such as these:

    https://www.youtube.com/user/fightfo...rgotten/videos



    Are there any maps showing the frequency of haplogroup B (taking into acount total population)?

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    I didn't expect to see Justin Wren when I clicked on this thread.

    What a journey that man has been on. From MMA fights in Bellator and the UFC to hanging out with Pygmies in the Congo. What a life.

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    Unfortunately not all Pygmies are as lucky as these who met Justin Wren:


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    Thanks, Tomenable, I agree, their situation is tragic. though they have a beautiful, rich culture, documented by anthropologists and ethnomusicologists. Of course much of it is being lost, as they are prevented from living in their forest home. From what I know, this video is no exaggeration, though those in the DRC may perhaps be the worst off, following the atrocities committed against them in the war there. In a few regions, things may be a little better than what it shows. I hope.

    As the video shows, they're often used as slaves by their larger neighbors, who consider them inferior sub-humans. Overall, they're the most powerless and downtrodden people in the region. Usually they aren't considered citizens, having no identity papers documenting their births or residence, and therefore they have no vote.

    I would so much like there to be greater public awareness of their plight and support for projects to assist them. In the A00 Cameroon research project, we're thinking about what we can do to give back to the communities we'd like to sample. There are some local organizations here and there which Pygmies and sympathetic outsiders have formed to help them advocate for their rights, to gain a somewhat more adequate livelihood, and access to health care and schooling. Here and there, humanitarian groups are operating little projects to support one community or another.

    Any suggestions for worthwhile groups to support are welcome.

    I'd suggest this discussion on the Pygmies be moved to another thread, though. Anyone know where would be suitable?

    I'll post separately on Haplogroup B.

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    B2b map

    I do have a few maps, however inadequate, on the distribution of haplogroup B, but they really need to be updated. [Note: these have been somewhat updated, however the graphics aren't very good.]

    Here's one for B2b. I think we can safely assume it also occurs in the countries that are completely surrounded by countries where there is B2b.

    Keep in mind, please, that this is a rough draft, and that B2b certainly isn't found in all parts of the countries colored in -- it has just been found in some part of it.

    b2b-map-new-green.png

    It's more common among the Pygmies than any other clade of B, but as you can see, it's not limited to them. It's found among the hunting-gathering people of Tanzania, the San and related peoples of Southern Africa, and a few among people you wouldn't expect, such as the Maasai! It's even found among a few people from the Arabian Peninsula. I believe this is likely due to centuries of slave-trading in East Africa.

    It's an ancient, deep-rooted clade with many subclades, which are being well documented in recent years.
    Last edited by Bonnie; 01-09-2016 at 05:38 PM.

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    B2a map

    B2a is the largest clade of haplogroup B, B2a1 in particular (I've never heard of any B2a2). It's considered by scholars to have been spread as part of the great Bantu Expansion. We see a relatively good number of B2a1 among African-Americans, though any A or B is still rare among them.

    Here's a map for B2a. I think it occurs at low rates in many countries bordering those colored in. Some countries have far more than others. Cameroon has one of the most numerous counts, though some intense sampling in South Africa, Botswana and Uganda turned up quite a few in those countries. As you can imagine, Africa still has many populations that have hardly been sampled. For example, on the map none is seen in Sudan or South Sudan, but I'd bet there might be some. Sudan and South Sudan's longstanding state of war would be a good guess as to the reason for the lack of samples.

    b2a-map-new-blue.png

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    B1 and B3 maps

    And then there are the rarer clades, B1 and B3. These have been found in a more limited range, though no doubt there could be more.

    B1 has been known for years, as you can guess from its name. It's still quite rare, but we now have, at least, two sets of Big Y results, one of those also having participated in Walk Through the Y.

    B3, which branches off upstream of B1 and B2, was discovered by my research, combining Walk Through the Y and 1000 Genomes data, and we also now have one man's Big Y results. As of yet, no published papers have tested for it, though Mannis van Oven has kindly added it to his tree at http://www.phylotree.org/Y/tree/.

    The B3 map is from a different set. It's only known from the Senegambia region and from African and Caribbean Americans.

    B1-map-new-aqua.pngB3-Map-cropped.jpg
    Last edited by Bonnie; 01-09-2016 at 05:42 PM.

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    Quote Originally Posted by Tomenable View Post
    Are there any maps showing the frequency of haplogroup B (taking into acount total population)?
    This is my map of Y-DNA B. Hope it's useful.

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    Ancestral paternal origin: [BigY results and YFull interpretation coming soon]
    Ancestral maternal origin: Nordic Bronze Age > Pre-Roman Iron Age > Roman Iron Age > Germanic Iron Age > Longobard

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    Very nice maps, thank you Bonnie and Passa.

    There is also some B outside of Africa - question is whether it is recent dispersal, or more ancient one:

    https://en.wikipedia.org/wiki/Haplog...0#Distribution

    https://en.wikipedia.org/wiki/Haplog...-M60#Subclades

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    Quote Originally Posted by Passa
    This is my map of Y-DNA B. Hope it's useful.
    Is B really so common in the west of South Africa, though?

    I think that A is the main Y-DNA haplogroup of the Khoisan:

    https://en.wikipedia.org/wiki/Khoisa...enetic_studies


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