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Thread: Large difference between AncestryDNA, GEDMatch and DNA.Land Results?

  1. #1
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    Large difference between AncestryDNA, GEDMatch and DNA.Land Results?

    Hi, so for my whole life I've known that I'm 100% Ashkenazi Jewish and don't have any recent gentile ancestors. I took an AncestryDNA Test, which confirmed what I've known myself to be: 100% Ashkenazi Jewish.

    Screen Shot 2019-09-06 at 12.10.27 PM.png

    I also put my results into Eurogenes' JTest, and received these results. According to the creator of the calculator, anything around or above 25% Ashkenazi is indicative of full Ashkenazi ancestry.Screen Shot 2019-09-06 at 12.13.38 PM.png
    Admix Results (sorted):

    # Population Percent
    1 ASHKENAZI 27.96
    2 EAST_MED 19.7
    3 WEST_MED 10.95
    4 MIDDLE_EASTERN 8.04
    5 ATLANTIC 7.86
    6 SOUTH_BALTIC 7.17
    7 WEST_ASIAN 5.62
    8 NORTH-CENTRAL_EURO 5.49
    9 EAST_EURO 4.92
    10 WEST_AFRICAN 0.83
    11 EAST_ASIAN 0.76
    12 SIBERIAN 0.36
    13 EAST_AFRICAN 0.33

    Single Population Sharing:

    # Population (source) Distance
    1 AJ 4.24
    2 South_Italian_&_Sicilian 22.04
    3 GR 23.29
    4 Tuscan 24.95
    5 RO 25.65
    6 North_Italian 26.63
    7 Serbian 27.84
    8 PT 30.18
    9 TR 30.95
    10 HU 31.21
    11 AT 31.37
    12 ES 31.92
    13 FR 33.28
    14 IQ 33.48
    15 Moroccan 34.01
    16 Assyrian 34.37
    17 Mandean 34.6
    18 Algerian 34.68
    19 Samaritan 34.84
    20 Armenian 34.87

    Mixed Mode Population Sharing:

    # Primary Population (source) Secondary Population (source) Distance
    1 94.4% AJ + 5.6% Northwest_Russian @ 3.35
    2 94.9% AJ + 5.1% LIT @ 3.42
    3 94.1% AJ + 5.9% West_Russian @ 3.43
    4 94.5% AJ + 5.5% Belorussian @ 3.45
    5 94% AJ + 6% Ukrainian-Russian @ 3.45
    6 94.7% AJ + 5.3% North_Russian @ 3.46
    7 94.1% AJ + 5.9% UA @ 3.47
    8 94.1% AJ + 5.9% PL @ 3.47
    9 94.7% AJ + 5.3% Erzya @ 3.5
    10 95% AJ + 5% EE @ 3.52
    11 94.7% AJ + 5.3% East_Russian @ 3.54
    12 91.6% AJ + 8.4% RO @ 3.55
    13 93.1% AJ + 6.9% HU @ 3.56
    14 95.5% AJ + 4.5% Udmurt @ 3.66
    15 95.3% AJ + 4.7% South_Finnish @ 3.69
    16 95.4% AJ + 4.6% East_Finnish @ 3.69
    17 93.1% AJ + 6.9% Serbian @ 3.72
    18 93.9% AJ + 6.1% AT @ 3.72
    19 96.1% AJ + 3.9% Komi @ 3.82
    20 96.2% AJ + 3.8% French_Basque @ 3.89

    Using 2 populations approximation:
    1 50% AJ +50% AJ @ 4.722659


    Using 3 populations approximation:
    1 50% AJ +25% AJ +25% AJ @ 4.722659


    Using 4 populations approximation:
    ++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++
    1 AJ + AJ + AJ + AJ @ 4.722659
    2 AJ + AJ + AJ + RO @ 6.412203
    3 AJ + AJ + AJ + Serbian @ 7.239755
    4 AJ + AJ + AJ + North_Italian @ 7.437680
    5 AJ + AJ + AJ + South_Italian_&_Sicilian @ 7.469583
    6 AJ + AJ + AJ + GR @ 7.602283
    7 AJ + AJ + AJ + Tuscan @ 7.682784
    8 AJ + AJ + AJ + HU @ 7.809412
    9 AJ + AJ + AJ + AT @ 8.161668
    10 AJ + AJ + AJ + PT @ 8.430132
    11 AJ + AJ + AJ + ES @ 8.744425
    12 AJ + AJ + AJ + FR @ 9.158604
    13 AJ + AJ + AJ + Ukrainian-Russian @ 9.696512
    14 AJ + AJ + AJ + UA @ 9.734828
    15 AJ + AJ + AJ + Moroccan @ 9.739246
    16 AJ + AJ + AJ + PL @ 9.749439
    17 AJ + AJ + AJ + West_Russian @ 9.891131
    18 AJ + AJ + AJ + Algerian @ 9.953734
    19 AJ + AJ + AJ + West_&_Central_German @ 10.060526
    20 AJ + AJ + AJ + TR @ 10.245856


    HOWEVER, for my DNA.Land results, I got this:
    Screen Shot 2019-09-06 at 11.52.20 AM.png
    Screen Shot 2019-09-06 at 11.52.38 AM.png

    I'm very confused, because 77% Ashkenazi ancestry is much different than the 100% given by AncestryDNA and GEDMatch. I also read that DNA.Land has a tendency to overestimate Ashkenazi ancestry. I don't know what to make of these results, can someone please help me?

  2. The Following 2 Users Say Thank You to 19scohen For This Useful Post:

     chelle (09-11-2019),  passenger (09-10-2019)

  3. #2
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    Every test is a little bit different. Some would say any result that is 100% of one thing is an "overfit" and not actually very useful at explaining your ancestry compared to breaking it down into smaller components. If you have a paper trail AND several different testing services say you are Ashkenazi Jewish, then you almost certainly are.

  4. The Following User Says Thank You to Greekscholar For This Useful Post:

     chelle (09-11-2019)

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    First, don't be a retard and remove your name from the last image.

    I received 100% European Jewish on AncestryDNA, Ashkenazi score of 27.51 on the JTest, and 76% Ashkenazi on DNA.LAND. The only reason DNA.LAND seems like it overestimates Ashkenazi is because it's garbage all around and assigns it to those who aren't Ashkenazi. Granted, you have the 2nd lowest Ashkenazi score on DNA.LAND I've seen - mine being the lowest. This is probably because we're outliers to the Ashkenazi gene pool. Have you uploaded elsewhere?
    הִנְנִי֩ מֵבִ֨יא אוֹתָ֜ם מֵאֶ֣רֶץ צָפ֗וֹן

    Jeremiah 31

    Other potential and/or likely recent lineages: R-A11720, J-FGC21085, E-FGC56023

  6. The Following User Says Thank You to StillWater For This Useful Post:

     jetshop (09-11-2019)

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    Quote Originally Posted by 19scohen View Post
    Hi, so for my whole life I've known that I'm 100% Ashkenazi Jewish and don't have any recent gentile ancestors. I took an AncestryDNA Test, which confirmed what I've known myself to be: 100% Ashkenazi Jewish.

    Screen Shot 2019-09-06 at 12.10.27 PM.png

    I also put my results into Eurogenes' JTest, and received these results. According to the creator of the calculator, anything around or above 25% Ashkenazi is indicative of full Ashkenazi ancestry.Screen Shot 2019-09-06 at 12.13.38 PM.png
    Admix Results (sorted):

    # Population Percent
    1 ASHKENAZI 27.96
    2 EAST_MED 19.7
    3 WEST_MED 10.95
    4 MIDDLE_EASTERN 8.04
    5 ATLANTIC 7.86
    6 SOUTH_BALTIC 7.17
    7 WEST_ASIAN 5.62
    8 NORTH-CENTRAL_EURO 5.49
    9 EAST_EURO 4.92
    10 WEST_AFRICAN 0.83
    11 EAST_ASIAN 0.76
    12 SIBERIAN 0.36
    13 EAST_AFRICAN 0.33

    Single Population Sharing:

    # Population (source) Distance
    1 AJ 4.24
    2 South_Italian_&_Sicilian 22.04
    3 GR 23.29
    4 Tuscan 24.95
    5 RO 25.65
    6 North_Italian 26.63
    7 Serbian 27.84
    8 PT 30.18
    9 TR 30.95
    10 HU 31.21
    11 AT 31.37
    12 ES 31.92
    13 FR 33.28
    14 IQ 33.48
    15 Moroccan 34.01
    16 Assyrian 34.37
    17 Mandean 34.6
    18 Algerian 34.68
    19 Samaritan 34.84
    20 Armenian 34.87

    Mixed Mode Population Sharing:

    # Primary Population (source) Secondary Population (source) Distance
    1 94.4% AJ + 5.6% Northwest_Russian @ 3.35
    2 94.9% AJ + 5.1% LIT @ 3.42
    3 94.1% AJ + 5.9% West_Russian @ 3.43
    4 94.5% AJ + 5.5% Belorussian @ 3.45
    5 94% AJ + 6% Ukrainian-Russian @ 3.45
    6 94.7% AJ + 5.3% North_Russian @ 3.46
    7 94.1% AJ + 5.9% UA @ 3.47
    8 94.1% AJ + 5.9% PL @ 3.47
    9 94.7% AJ + 5.3% Erzya @ 3.5
    10 95% AJ + 5% EE @ 3.52
    11 94.7% AJ + 5.3% East_Russian @ 3.54
    12 91.6% AJ + 8.4% RO @ 3.55
    13 93.1% AJ + 6.9% HU @ 3.56
    14 95.5% AJ + 4.5% Udmurt @ 3.66
    15 95.3% AJ + 4.7% South_Finnish @ 3.69
    16 95.4% AJ + 4.6% East_Finnish @ 3.69
    17 93.1% AJ + 6.9% Serbian @ 3.72
    18 93.9% AJ + 6.1% AT @ 3.72
    19 96.1% AJ + 3.9% Komi @ 3.82
    20 96.2% AJ + 3.8% French_Basque @ 3.89

    Using 2 populations approximation:
    1 50% AJ +50% AJ @ 4.722659


    Using 3 populations approximation:
    1 50% AJ +25% AJ +25% AJ @ 4.722659


    Using 4 populations approximation:
    ++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++
    1 AJ + AJ + AJ + AJ @ 4.722659
    2 AJ + AJ + AJ + RO @ 6.412203
    3 AJ + AJ + AJ + Serbian @ 7.239755
    4 AJ + AJ + AJ + North_Italian @ 7.437680
    5 AJ + AJ + AJ + South_Italian_&_Sicilian @ 7.469583
    6 AJ + AJ + AJ + GR @ 7.602283
    7 AJ + AJ + AJ + Tuscan @ 7.682784
    8 AJ + AJ + AJ + HU @ 7.809412
    9 AJ + AJ + AJ + AT @ 8.161668
    10 AJ + AJ + AJ + PT @ 8.430132
    11 AJ + AJ + AJ + ES @ 8.744425
    12 AJ + AJ + AJ + FR @ 9.158604
    13 AJ + AJ + AJ + Ukrainian-Russian @ 9.696512
    14 AJ + AJ + AJ + UA @ 9.734828
    15 AJ + AJ + AJ + Moroccan @ 9.739246
    16 AJ + AJ + AJ + PL @ 9.749439
    17 AJ + AJ + AJ + West_Russian @ 9.891131
    18 AJ + AJ + AJ + Algerian @ 9.953734
    19 AJ + AJ + AJ + West_&_Central_German @ 10.060526
    20 AJ + AJ + AJ + TR @ 10.245856


    HOWEVER, for my DNA.Land results, I got this:
    Screen Shot 2019-09-06 at 11.52.20 AM.png
    Screen Shot 2019-09-06 at 11.52.38 AM.png

    I'm very confused, because 77% Ashkenazi ancestry is much different than the 100% given by AncestryDNA and GEDMatch. I also read that DNA.Land has a tendency to overestimate Ashkenazi ancestry. I don't know what to make of these results, can someone please help me?
    Like Greekscholar said, tests that break your ancestry down a bit more can be more interesting and helpful. That said, I wouldn't put much stock in DNA.land. While they actually gave me a similar Ashkenazi percentage to most other services, at 32%, they also gave me a huge percentage of Balkan and Italian, which, if I add it all up, somehow must come largely from my father's side and not just from my Jewish ancestry. Given that my father's background is totally NW European and he never gets anything other than a trace percent outside NW Europe in any other test, that seems highly unusual to me.

  8. #5
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    Quote Originally Posted by StillWater View Post
    First, don't be a retard and remove your name from the last image.

    I received 100% European Jewish on AncestryDNA, Ashkenazi score of 27.51 on the JTest, and 76% Ashkenazi on DNA.LAND. The only reason DNA.LAND seems like it overestimates Ashkenazi is because it's garbage all around and assigns it to those who aren't Ashkenazi. Granted, you have the 2nd lowest Ashkenazi score on DNA.LAND I've seen - mine being the lowest. This is probably because we're outliers to the Ashkenazi gene pool. Have you uploaded elsewhere?
    I uploaded both my 23andme kit and my MyHeritage one to DNA.land and got different percentages. 23andme returned 99% AJ and MyHeritage returned 85% AJ. Even MyHeritage didn't change my results so drastically when I uploaded my 23andme kit, which really says something about the quality of DNA.land....

  9. #6
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    My mom is half and DNA land puts hers at about 30% Mediterranean Islander and 20% Ashkenazi. Like everyone above said, each calculator is different. Sometimes I consider them clues and other times just more confusion.

  10. #7
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    DNA Land is pretty hit or miss. Some uploads are more accurate than others.

    More than likely you're 100% Ashkenazi, or 99.9% Ashkenazi with a Sephardic ancestor somewhere way down the line.
    Target: mildlycurly_scaled
    Distance: 1.3578% / 0.01357814
    57.0 Irish
    37.6 English
    2.6 Roma_Barcelona
    1.8 Ashkenazi_Germany
    1.0 Roma_Granada


    Current research interest(s): The Viscontis of Milan

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