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Thread: Proof Ancestry ethnicity update is totally wrong.

  1. #1
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    Exclamation Proof Ancestry ethnicity update is totally wrong.

    I just checked out the ethnicity update on Ancestry for a cousin who is 50% Native, 25% Latin American and 25% Irish.
    I am laughing my head of at how BAD the results are.
    They put him at 63% Irish and Scottish with 37% England, Wales and Northwestern European. He already thought ancestry dna testing was garbage and now he's convinced it's all a [email protected]
    Just looking at my cousin and he doesn't remotely resemble someone from NW Europe. And if you saw his grandparents photos, you can see how their clearly POC.
    Complete absurd results.
    Guess I'm finally going to splurge for 23 and Me.

    4wP7h1E.jpg

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  3. #2
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    What makes you think that 23andMe is any better? There is no way to prove that any of them are correct. They are all opinion and when adjustments are made it is according to opinion.

    My interest is in matching. When most people have thousands of 5th cousin matches, but we can't find common ancestors within the last few hundred years, why should we be able to figure out precisely admixture?

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    Surely there must have been a mixup on Ancestry's part there. This is hilariously wrong.
    Target: mildlycurly_scaled
    Distance: 1.3578% / 0.01357814
    57.0 Irish
    37.6 English
    2.6 Roma_Barcelona
    1.8 Ashkenazi_Germany
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    ^ I've heard your matches are the best guide to ethnicity .
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  9. #5
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    Quote Originally Posted by Askye View Post
    I just checked out the ethnicity update on Ancestry for a cousin who is 50% Native, 25% Latin American and 25% Irish.
    I am laughing my head of at how BAD the results are.
    They put him at 63% Irish and Scottish with 37% England, Wales and Northwestern European. He already thought ancestry dna testing was garbage and now he's convinced it's all a [email protected]
    Just looking at my cousin and he doesn't remotely resemble someone from NW Europe. And if you saw his grandparents photos, you can see how their clearly POC.
    Complete absurd results.
    Guess I'm finally going to splurge for 23 and Me.

    4wP7h1E.jpg
    Was his estimate any better before the update? If his/your knowledge about his background is accurate, then these do seem like some pretty ridiculous results. However, I wouldn't make a blanket statement like "Ancestry ethnicity update is totally wrong". I've seen some pretty imperfect results so far, but nothing crazily inaccurate except this example. My father's update hasn't come yet, but if it's anything like the "hack" that came out a little while ago, it's actually a slight improvement on his previous results, and roughly matches his paper trail. We'll see.

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  11. #6
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    Quote Originally Posted by C J Wyatt III View Post
    What makes you think that 23andMe is any better? There is no way to prove that any of them are correct. They are all opinion and when adjustments are made it is according to opinion.

    My interest is in matching. When most people have thousands of 5th cousin matches, but we can't find common ancestors within the last few hundred years, why should we be able to figure out precisely admixture?
    Actually, while this isn't proof that 23andMe is better, the fact that they present their ancestry results in the form of a genome painting makes it more testable than other companies' presentations. You have at least the possibility of correlating ancestry with ancestors -- in a way that you cannot with mere percentages.

    As an example, I have a third cousin with whom I share several segments, with one of those segments being on chromosome 15. In the same region of chromosome 15 where our shared segment is located, Ancestry Composition identifies a Native American segment for both of us -- and we do have a known Native American ancestor through one of our common 2nd great grandparents.

    Now, that doesn't prove that the segment came from this Native American ancestor. However, the segment had to have come from one of the two shared 2nd great grandparents -- or possibly from both, although small segments are less likely to reflect recent recombination. Further, one of those 2nd great grandparents immigrated directly from Spain, and is not likely to be the source of this segment.

    If my 3rd cousin and I had only percentages to go by, as with Ancestry, there would be no way of determining on what line particular segments were transmitted. At 23andMe, it sometimes is possible to do so.

    This is not the only example I could use. I have five tested full siblings and a tested father, as well as a tested daughter whose mother was also tested. So I can compare -- and have compared -- how well Ancestry Composition aligns with our DNA comparisons. The answer is, not perfectly but to a fair degree. There are locations that don't align completely, yet more often than not the estimates are consistent. That is, in most locations there is a reasonable correspondence between our DNA matching and Ancestry Composition's predicted ancestries -- plus our actual, known ancestry.

    EDIT:

    Generally speaking, I have far too many 4th cousin matches to try to work my way through very many 5th cousin matches. In spite of that, it certainly isn't true for me that I can't find common ancestors "within the last few hundred years".

    In fact, there are well over a dozen of my 4th great grandparents that are shared with other descendants who have tested at Ancestry. Choosing just one of these 4th great grandparents for illustration purposes, I have DNA matches to descendants of at least six of his offspring -- not including other descendants of my own 3rd great grandfather's line (his son). The total number of these DNA matches? 131. (Again, this is not including those in my 3rd great grandfather's line, but just those for whom the 4th great grandfather and his wife are our most recent common ancestors.)
    Last edited by geebee; 10-28-2019 at 05:56 PM.
    Besides British-German-Catalan, ancestry includes smaller amounts of French, Irish, Swiss, Choctaw & another NA tribe, possibly Catawba. Avatar picture is: my father, his father, & his father's father; baby is my eldest brother.

    GB

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  13. #7
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    Is this result different from anything else he's done? Generally continental wide are fairly accurate. Have you tried loading to GedMatch and seeing what they say? It seems like there's a decent chance there's a surprise for him in his family tree.
    Last edited by Osiris; 10-29-2019 at 12:35 AM. Reason: wife to wide
    Daughter's ggg grandparents(father to left, mother to right)
    Y-DNA: R-BY4242, R-Z344, ?, ?, E-FT41362, ?, E-L29, ?, R-Z20907, ?, ?, ?, R-L2, R-L20, ?, ?
    MT-DNA: ?, ?, H3g, ?, ?, ?, ?, W6a, ?, N1b1, ?, B4a1a1, ?, U5b2a, ?, H3h, ?, ?, H15a1, ?, ?, ?, ?, I3a, ?, ?, ?, ?, ?, ?, ?, K1c1g

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  15. #8
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    Quote Originally Posted by Osiris View Post
    Is this result different from anything else he's done? Generally continental wife are fairly accurate. Have you tried loading to GedMatch and seeing what they say? It seems like there's a decent chance there's a surprise for him in his family tree.
    Ditto, I'd say it can't be that wrong. Either the test has been mixed up with someone else's, or one or both of the parents may have made false or exaggerated claims about their ancestry, which would definitely not be that unusual, particularly with a native American or Spanish/Latino identity to spice up plain old WASPs or Celts. Usually English, Scottish, Welsh, Dutch or German are the identities that get conveniently forgotten because they're just not that cool.

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  17. #9
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    At least for those of mixed Northwestern and Southern + Southeastern European descent, 23andme basically makes AncestryDNA look like an amateurish ethnicity horoscope, though for full-blooded Southern Euro's and Northwestern Europeans the results are pretty accurate on average. I'm half South Italian/Dutch and after this last update, they diminished my Italian percentage to just 27%! the rest being 50% Germanic Europe and Northwestern European & English etc. basically taking away one of my Italian parents and replacing it with a British one
    Mc Donald:
    Most likely fit is 62.4% (+- 9.5%) Europe (various subcontinents)
    and 37.6% (+- 9.5%) Mideast (various subcontinents)
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    1 50% S_Italian_Sicilian +50% Dutch @ 1.083
    2 50% German +50% S_Italian @ 1.126
    3 50% Dutch +50% S_Italian @ 1.148

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  19. #10
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    Maternal grandmother 100% Southern Italian, Paternal great grandfather 100% Southern Italian. Ancestry update dropped my Southern Italian to a whopping 6%. A total joke! Ancestry is a laughing stock compared to 23andme.
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