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Thread: Gedmatch Archaic Matches?

  1. #11
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    Quote Originally Posted by J1 DYS388=13 View Post
    If you search for Gedmatch matches for those aDNA cases, you see matches at a distance of 4 or 5 generations. How can that be?
    I was wondering that. I was thinking maybe that's only as far as that application goes back on specific ancestors? You never seem to see matches which say 20 generations or something. Maybe someone who knows more can explain. John

  2. #12
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    What I have found is, as expected, the length of the match halves for each generation away as expected, until it gets down to about 20cM. But once beyond that it just reaches a plateau, certainly in any Anglo population. I was amazed to find a 12cM match with a probable 15th cousin, from tree match. But 7cM and 700 SNPs is considerably more amazing, what would typically be ~5/6 generations.
    What we all have to remember is that we have to get our DNA from some of our ancestors the most likely value is zero beyond 5/6 generations but they can not all give us zero, by definition.
    This is from someone who has more than 5000 matches on the GED match tier 1 option.
    Out of 64 pre 1800 births 44% Cheshire, 1% Worcestershire, 1% Scottish (or Irish), 25% south Derbyshire, 13% Burton on Trent area (where 4 counties within 10 miles), 7% Shropshire, 1% Staffs, 8% Lancs

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

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  4. #13
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    I got a match at 5.0 cM with
    1 segment RISE98, SWEDEN, 3.7ky
    utdijKS.gif

    I got matches at 4.0 cM with
    2 segments for RISE98, SWEDEN, 3.7ky,
    2 segments for LBK, STUTTGART, 7ky
    2 segments for BR2, HUNGARY 3.2ky
    1 segment for Loschbour, Lux., 8ky
    http://i.imgur.com/Ddt8UKK.gif

    If go down to 1.0 cM i match -of course- all of them. But most i match like at 4.0cM the
    RISE98, SWEDEN, 3.7ky, LBK, STUTTGART, 7ky, BR2, HUNGARY3.2ky, Loschbour, Lux., 8ky and also
    Ust-Ishim, SIBERIA, 45ky, NE1, HUNGARY 7.2ky a lot.
    http://i.imgur.com/tMewb7b.gif


    My wife first matches are at 4.0 cM with
    3 segments LBK, STUTTGART, 7ky,
    4 segment Ust-Ishim, SIBERIA, 45ky,
    1 segment NE1, HUNGARY 7.2ky
    http://i.imgur.com/ozh7UwX.gif

    If my wife go down to 1.0 cM the picture is similar to my result (she match more neanderthal then me but i match more Denisova):
    SA4o5EA.gif


    Our son also made his first matches at 4.0 cM with
    1 segment LBK, STUTTGART, 7ky,
    1 segment BR2, HUNGARY 3.2ky,
    1 segment Ust-Ishim, SIBERIA, 45ky, and
    1 segment NE1, HUNGARY 7.2ky
    NRwrKII.gif

    If i take my son down to 1.0 cM it is also a similar reslut (he get the more neanderthal DNA from my wife but not that "my" Denisova DNA)
    YlCmaIn.gif
    FTDNA:
    Paternal: R-FGC34881, Friedrich August Peiffer, b. 1822 Merseburg, Saxony-Anhalt, Germany
    Maternal: Haplogroup H10e, Luise Emma Degner born Krüger, b. ~1915, Jagolitz, Kreis Deutsch-Krone, Pomerania, Germany (Poland now)
    Geno 2.0:
    2,9% Neanderthal, 3,1% Denisovan

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    Using 4cMs/400

    LBK 5.9 2
    Loschbour 5.6 3
    Clovis Montana 5.3 1
    BR2 5.0 1
    Ust Ishim 6.1 1
    NE1 4.6 1
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  8. #15
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    Well I'm speechless.
    While all family records to date show my mom's family as all being Lebanese/Syrian or maybe Turkish or Kurd or Armenian, Mom matches archaic LBK Stuttgart at over 7 cM:

    Comparing Kit ##### and F999916 (LBK, Stuttgart, 7ky)

    Minimum threshold size to be included in total = 500 SNPs
    Mismatch-bunching Limit = 250 SNPs
    Minimum segment cM to be included in total = 1.0 cM


    Chr Start Location End Location Centimorgans (cM) SNPs
    1 193,308,328 197,143,481 1.9 671
    3 45,647,875 49,131,477 1.4 571
    3 99,194,979 102,049,261 1.1 560
    5 129,025,039 132,492,448 1.4 564
    6 34,600,990 36,726,799 2.0 509
    8 50,442,166 53,570,987 2.7 531
    8 106,949,825 109,808,713 2.3 551
    10 21,798,873 24,672,141 2.6 561
    10 56,705,391 60,239,652 2.4 696
    11 102,418,289 106,028,363 1.9 723
    12 17,531,088 19,713,504 2.0 509
    12 33,105,469 40,285,809 1.7 970
    14 49,574,961 51,547,585 2.2 621
    15 72,450,318 75,847,602 1.8 517
    16 31,272,410 47,788,623 1.5 504
    22 16,987,872 20,658,391 7.2 805
    Largest segment = 7.2 cM
    Total of segments > 1 cM = 36.0 cM
    16 matching segments


    Between that and her mtDNA, I keep coming up with new questions. Is this a Neolothic Farmer remnant or something European that later traveled back southeast? Or just a really big coincidence?
    R1b (aka M343) > M269 > L23 > L51 > L11 > P312 > DF19 > DF88 > FGC11833 > S4281 > S4268 > Z17112 (S17075-, L644-)

    Archaeological cousin: 6DRIF-23 of Driffield Terrace Roman Cemetery, York (Z17112+, S17075+, L644-)

    Known ancestors: Francis Cooke (I-M223/I2a2a) b. 1583; John Wing (U106) b. 1584; Richard Warren (M269Hidden Content ) b.c. 1578; Elizabeth Walker (Warren) (H1j mtDNA) b. 1583; John Mead b.c. 1634 (I2a1/P37.2)

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  10. #16
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    Quote Originally Posted by Dewsloth View Post
    Well I'm speechless.
    While all family records to date show my mom's family as all being Lebanese/Syrian or maybe Turkish or Kurd or Armenian, Mom matches archaic LBK Stuttgart at over 7 cM:

    Comparing Kit ##### and F999916 (LBK, Stuttgart, 7ky)

    Minimum threshold size to be included in total = 500 SNPs
    Mismatch-bunching Limit = 250 SNPs
    Minimum segment cM to be included in total = 1.0 cM


    Chr Start Location End Location Centimorgans (cM) SNPs
    1 193,308,328 197,143,481 1.9 671
    3 45,647,875 49,131,477 1.4 571
    3 99,194,979 102,049,261 1.1 560
    5 129,025,039 132,492,448 1.4 564
    6 34,600,990 36,726,799 2.0 509
    8 50,442,166 53,570,987 2.7 531
    8 106,949,825 109,808,713 2.3 551
    10 21,798,873 24,672,141 2.6 561
    10 56,705,391 60,239,652 2.4 696
    11 102,418,289 106,028,363 1.9 723
    12 17,531,088 19,713,504 2.0 509
    12 33,105,469 40,285,809 1.7 970
    14 49,574,961 51,547,585 2.2 621
    15 72,450,318 75,847,602 1.8 517
    16 31,272,410 47,788,623 1.5 504
    22 16,987,872 20,658,391 7.2 805
    Largest segment = 7.2 cM
    Total of segments > 1 cM = 36.0 cM
    16 matching segments


    Between that and her mtDNA, I keep coming up with new questions. Is this a Neolothic Farmer remnant or something European that later traveled back southeast? Or just a really big coincidence?
    Well First Farmers did come out of that Region didn't they, so maybe not that surprising? John

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  12. #17
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    Dewsloth, we may be related by the way, I have a greater than 4 cM match with Stuttgart, two segments. John

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  14. #18
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    Our results (I've changed minimum segment cM size to be included from default to 4)...



  15. #19
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    I also got my largest archaic match to Clovis Anzick of 5.3 cm. Al also got smaller segments that were a match on all 22 autosomal chromosomes. Haven't figured out the significance yet. Im guessing there is a match. Considering he died 12k years ago and didnt have direct descendants I am taking it as a good indicator. Or at least I hope 😊

  16. #20
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    my grandpa has an 8cm segment with clovis child

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