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Thread: i2a1b or I2a2?

  1. #1

    i2a1b or I2a2?

    I've been tested by MyHeritageDNA and am trying to narrow down my haplogroup based on this limited information.
    1) By manually comparing the snps (which are relevant to haplogroups according to Promethease) on the isogg tree
    and 2) by using a haplogroup predictor.
    However, the results do not match. The predictor's result is like following:

    As you can see it's based on ISOGG's 2013 tree.

    I know about about naming discrepancies but can't figure it out.

    Based on the latest version of the 2018 tree, the 2 last green marked SNPs
    (rs7893064(A;A)/S150) & (rs17316729(A;A)/S120) make me a member of I2a1b 1.

    Can anyone clarify this situation for me and tell me whether my current DNAinfo is even worth enough for haplo-research?


  2. #2
    Registered Users

    Canada Netherlands United Kingdom Ireland France Cornwall
    It is easier to refer to haplogroups by their shorthand names "I2-S150" or "I1-Y13039" versus I2a1b, etc due to the constant changing of the ISOGG tree and other similar phylogenetic trees.

  3. The Following 4 Users Say Thank You to spruithean For This Useful Post:

     Absolutely (07-27-2018),  deadly77 (07-27-2018),  Dorkymon (08-08-2019),  palamede (07-29-2018)

  4. #3
    Gold Class Member
    United Kingdom
    mtDNA (M)
    Y-DNA (P)

    United Kingdom Northumberland European Union
    The Illumina OmniExpress chip that MyHeritage uses for their DNA tests only includes 482 Y chromosome SNPs. This is lower than any of the other primarily autosomal chip test with the exception of FTDNA's FamilyFinder (which has zero). While I'm normally all for trying to get as much data as possible out of every DNA test that you've paid for, with the low number of Y-SNPs tested, and the possibility of no calls in such a small dataset, I wouldn't consider the MyHeritage data reliable for determining Y-DNA haplogroups.

    Agree with Spruthean's point about the old vs. new nomenclature of Y-DNA haploroups - much easier to follow and not subject to confusing alphabet soup changes on different versions of the ISOGG tree.

  5. The Following 2 Users Say Thank You to deadly77 For This Useful Post:

     Absolutely (07-27-2018),  palamede (07-29-2018)

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