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Thread: Y40 information

  1. #1
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    Y40 information

    Just received some preliminary results on my y-dna testing from yseq on the Z93 panel.

    I seem to be Y40+.

    Anyone have any further information on that? Parasar your input would be appreciated!

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    Here is YFull's R-Y40 haplotree. Notice that a couple of Bengalis from Bangladesh are in the Y37 subclade.

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    Quote Originally Posted by Reza View Post
    Just received some preliminary results on my y-dna testing from yseq on the Z93 panel.

    I seem to be Y40+.

    Anyone have any further information on that? Parasar your input would be appreciated!
    Y40 is one of the three main Z93 lines in South Asia. Parallel to M780-L657 and Z2125.
    The origin of all three along with parent Z94 is likely near the Volga though the larger Khazar steppe zone is also quite possible.

    Z2125 has Eurasian ditribution. L657 is limited mainly to South Asia and nearby. Y40 is seen up to Italy.

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    Thank you guys.

    On the likely assumption that I'm Y40 > Y37+, it appears to be represented in Gujarati and Punjabi samples too, so fairly widespread throughout the subcontinent? Is there any geographic distribution to the subclades?

    Did Y40 enter the subcontinent together with L657 and Z2125 or might there have been different waves?

    Also, a very basic question, but what do str results represent? Hopefully should receive the downstream markers soon. It looks like they test for Y39/M560 (Y37) and Y40 as well as YP294 and Z96.

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    Quote Originally Posted by Reza View Post
    Thank you guys.

    On the likely assumption that I'm Y40 > Y37+, it appears to be represented in Gujarati and Punjabi samples too, so fairly widespread throughout the subcontinent? Is there any geographic distribution to the subclades?

    Did Y40 enter the subcontinent together with L657 and Z2125 or might there have been different waves?

    Also, a very basic question, but what do str results represent? Hopefully should receive the downstream markers soon. It looks like they test for Y39/M560 (Y37) and Y40 as well as YP294 and Z96.
    STRs are pretty much like SNPs, the repeats just mutate more often on average per site. But with full scans available STRs have limited utility.
    You will likely be Y37+ Z96- Z667-YP294-
    Y41+or-ve is impossible to predict as Bangalis from Dacca have both.

    IMO, a single wave, due to their pan-subcontinental distributions.

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    Quote Originally Posted by parasar View Post
    STRs are pretty much like SNPs, the repeats just mutate more often on average per site. But with full scans available STRs have limited utility.
    You will likely be Y37+ Z96- Z667-YP294-
    Y41+or-ve is impossible to predict as Bangalis from Dacca have both.

    IMO, a single wave, due to their pan-subcontinental distributions.
    So I finally got my results from YSEQ.

    Y40*

    Surprisingly Y37- and as to be expected YP294- (and therefore downstream assumed Z96-)

    Interestingly the final marker is S27168 G+ as well as Y40 T+. Is that another of the Y40 defining markers? Or is it a further downstream marker?

    Noone is registered as Y40* on yfull - given the S27168 +ve marker, is that theoretically a new branch?

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    Quote Originally Posted by Reza View Post
    Interestingly the final marker is S27168 G+ as well as Y40 T+. Is that another of the Y40 defining markers? Or is it a further downstream marker?
    Noone is registered as Y40* on yfull - given the S27168 +ve marker, is that theoretically a new branch?
    S27268 was first identified in haplogroup R1b (in subclade Y18435 under DF13), so it seems that this is a recurrent mutation. In this particular case, it can be either your private mutation or a mutation defining a larger group of Y-DNA lineages under Y40, with the latter option including even a new subclade just under Y40. It would be useful to have your STR haplotype tested (preferably at FTDNA), so we could evaluate how frequent similar haplotypes are among the people tested so far.

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    Quote Originally Posted by Michał View Post
    S27268 was first identified in haplogroup R1b (in subclade Y18435 under DF13), so it seems that this is a recurrent mutation. In this particular case, it can be either your private mutation or a mutation defining a larger group of Y-DNA lineages under Y40, with the latter option including even a new subclade just under Y40. It would be useful to have your STR haplotype tested (preferably at FTDNA), so we could evaluate how frequent similar haplotypes are among the people tested so far.
    Thanks Michal.

    Presumably the higher number of STR markers the better - not sure I can afford to get the top end tests at present, but hopefully soon.

    Given the relative paucity of Y40+ individuals, do you think it'll shed much light on the matter, and even less likely for me to find a match? How would you go about checking to see if it's a new subclade?

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    Quote Originally Posted by Reza View Post
    Presumably the higher number of STR markers the better
    This is correct.


    Quote Originally Posted by Reza View Post
    Given the relative paucity of Y40+ individuals, do you think it'll shed much light on the matter, and even less likely for me to find a match?
    Well, South Asia (including India) is a huge potential market for DNA testing, and Y40 seems to constitute a significant fraction of the South Asian Y-DNA lineages, so we may expect that the number of available Y40 STR haplotypes will grow substantially in the near future.

    Quote Originally Posted by Reza View Post
    How would you go about checking to see if it's a new subclade?
    After finding similar haplotypes (including the so-called STR matches) among the FTDNA customers, we will need to contact them and encourage to order relevant SNP tests (including Big Y, ie.the most advanced and most useful Y-DNA SNP test offered by FTDNA).

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