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Thread: Comparing MyTrueAncestry Results with GEDmatch Results- Why the Difference?

  1. #1
    Junior Member
    Join Date
    28-10-21
    Posts
    1

    Y-DNA haplogroup
    R-M269
    MtDNA haplogroup
    U5a1g1

    Country: United States

    Exclamation Comparing MyTrueAncestry Results with GEDmatch Results- Why the Difference?

    This is my first post and I am not an expert, so please excuse my gaps in knowledge, but I would like some help. I am posting the areas of discrepancy between autosomal DNA results in matches from My True Ancestry and GEDmatch. Please give me your thoughts. It may be due to the setting I used, but if so I would like to run them again. My GEDmatch number is in my profile.
    Ancient DNA matches
    For GEDmatch, I used the following settings:
    Minimum segment threshold size to be included in total = 100 SNPs
    Minimum segment cM to be included in total = 3.0 cM

    1. Sigtuna 84005/ NJ2572514
    MyTrueAncestry:

    14.65 cm Total/ longest chain 12.75 cM, 1586 Total SNPs shared
    GEDmatch: No shared DNA segments found

    2.
    Sigtuna kal006/ GT8893268
    MyTrueAncestry: 2 SNP chains over 60, Largest chain: 137 SNPsGEDmatch: No shared DNA segments found3. Sigtuna urm160/ PV1449704
    MyTrueAncestry:
    8.96 cm total, longest chain 3.74, 237 largest snp chainGEDmatch: No shared DNA segments found4. Trans-Volga Forest Steppes kzb008/ TC4794281
    MyTrueAncestry:
    90.31 cm total, 36.75 cm longest chain, 176 largest snp chainGEDmatch: No shared DNA segments found

    5.
    kzb002_Srubnaya/ FC2917611MyTrueAncestry: 76.79cm total, 16.54 cm longest chain, 1209 total snps, 417 largest chainGEDmatch: No shared DNA segments found

    6. Western Scythian mix DA197/ UM3393611
    MyTrueAncestry: 20.75 cm total, 6.26 cm longest; 150 snps total, 9.69 largestGEDmatch: No shared DNA segments found
    7. Scythian Moldova scy301/ CG2611850
    MyTrueAncestry: 21.18 cm total, 17.07 cm longest, 191 total snpsGEDmatch: No shared DNA segments found
    Others do confirm matches, but the numbers aren't equal.
    ??????

  2. #2
    Regular Member
    Join Date
    26-01-09
    Posts
    718

    Y-DNA haplogroup
    R1b Z36

    Country: UK - Scotland

    I don't think My True Ancestry is all that accurate, to be honest.

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