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Thread: How accurate is this M458 map?

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    How accurate is this M458 map?

    This map has been around for a while now... but I was curious to see what people here thought of it? I'm surprised by such high frequencies in Pomerania.

    Haplogroup-R1a-M458.png

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    Such maps are seldom accurate. Underhill et al (2014) tested for different SNPs under R1a1 in over 100 populations . See table 4 : http://www.nature.com/ejhg/journal/v...hg201450x5.xls

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    ^ Eupedia has better maps than Underhill, at least when it comes to Z93 (e.g. Underhill's map shows low frequency in ethnic Pashtun areas):

    https://en.wikipedia.org/wiki/Y-DNA_...an_populations

    IIRC, Underhill's sample confirmed high frequency of R1a in Pashtuns. So he probably didn't know where Pashtuns live when making the map...

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    Quote Originally Posted by Volat View Post
    Such maps are seldom accurate. Underhill et al (2014) tested for different SNPs under R1a1 in over 100 populations . See table 4 : http://www.nature.com/ejhg/journal/v...hg201450x5.xls
    Underhill 2009 and Underhill 2014 were both very entertaining papers, but not very informative.

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    Quote Originally Posted by Tomenable View Post
    ^ Eupedia has better maps than Underhill, at least when it comes to Z93 (e.g. Underhill's map shows low frequency in ethnic Pashtun areas):

    https://en.wikipedia.org/wiki/Y-DNA_...an_populations

    IIRC, Underhill's sample confirmed high frequency of R1a in Pashtuns. So he probably didn't know where Pashtuns live when making the map...
    Yes his maps for Z93 look ridiculous. Most Pashtun populations have 50+% R1a-Z93 and many Pashtun populations even 70% or even slightly more. R1a is lower in Tajikistan (Duschanbe just 19% but on average close to 40%) except of some local peaks and in Kirghizstan not all regions are so rich in Z93. Z93 is lower among Afghan Tajiks than among Afghan Pashtuns in all studies I have seen so far and most of the Tajiks samples so far where from the north. Most studies show R1a percentages around 35% for Afghan Tajiks (but they have more R1b than Pashtuns). But Tajiks in the east seem to have R1a levels close to Pashtuns while Tajiks in the west are relatively low in it and Tajiks in the north show often very different percentages (sometimes 50% sometimes just 20%) To be honest most studies about R1a are crap and basically all maps I have seen so far are extremely inaccurate because they are based on too few samples. But yes the eupedia map is the best I have seen so far for Z93. But maps for European R1a subclades look better and are relatively accurate
    Last edited by Coldmountains; 08-05-2015 at 11:28 AM.

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    Quote Originally Posted by Generalissimo View Post
    Underhill 2009 and Underhill 2014 were both very entertaining papers, but not very informative.
    There are over 30 authors in 2014 paper. So, who is more informative on R1a1 at the moment?

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    Quote Originally Posted by Volat View Post
    There are over 30 authors in 2014 paper. So, who is more informative on R1a1 at the moment?
    There's not a single decent academic paper on R1a, so let's stop pretending like there is, shall we?

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    Quote Originally Posted by Generalissimo View Post
    There's not a single decent academic paper on R1a, so let's stop pretending like there is, shall we?
    The OP of the thread is interested in the distribution of M458. Are you suggesting these 32 authors could not have tested for M458 counting the frequency of the mutation in their samples?

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    Quote Originally Posted by Volat View Post
    The OP of the thread is interested in the distribution of M458. Are you suggesting these 32 authors could not have tested for M458 counting the frequency of the mutation in their samples?
    Yes, I'm saying there are serious problems with the study, so it doesn't look like a competent effort to me and its results should be viewed with caution.

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    Quote Originally Posted by Generalissimo View Post
    Yes, I'm saying there are serious problems with the study, so it doesn't look like a competent effort to me and its results should be viewed with caution.
    What kind of problems?

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