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Thread: A new one from France

  1. #11
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    Quote Originally Posted by Wing Genealogist View Post
    A False Positive is a result which conflicts with your Haplogroup assignment. It is highly likely the result is an error.

    These type of DNA tests are not 100% accurate. I don't know the error rate off-hand, but I believe it is in the range of 1-5% or so. I counted 19 false positives in 393 results. This results in an error rate just under 5%. In addition, the Y chromosome is notoriously difficult to read, and it's error rate may be higher than for the autosomal DNA.

    Also note where the vast majority of false positives cluster around certain haplogroups (such as E & N). It is possible there may be something going on which is contributing to these mis-calls.


    There would likely also be some "false negative" calls as well (where a SNP you should be positive for tested negative). This are MUCH harder to find, since the companies don't give you the HUGE number of negative calls.
    Wing Genealogist - do you think Magister would benefit from taking a Z156 SNP panel test at FTDNA? I know that test only looks for known SNPs discovered in Big Y... but Big Y being expensive I usually suggest a cheaper one first, but often explain that Big Y is the best bang for your buck in the long term as it sets you up with your personal variants that in the future someone who is positive for one or more - help create branching in your section of the U106 tree etc... in Magister's case it would be at the Z156 level and below... i guess in other words I'm asking what would be the best bet for him other than the Big Y. Of course Big Y is an option, but expensive.

    Cheers,
    Charlie
    Y-DNA: 4th GGF Adam Weaver born 1785 in Pennsylvania (most likely German) - Sergeant, US 17th Inf, War of 1812: R1b-U106-Z381-Z156-Z305/306/307-Z304-DF98-S1911-S1894/S1900-S4004/FGC14818/FGC14823-FGC14816/FGC14817 shared with 6drif-3!

    mtDNA: 3rd GGM Bridget Dana b. 1843 Ireland - T2b2b - Pagan Migrant Icelander SSG-A3 (grave 4?) - Sķlastašir in Eyjafjaršarsżsla, North Iceland is T2b2b. Relative of King Bela III of Hungary (his Y-DNA and autosomal kinsman buried near him had mtDNA T2b2b1)!

  2. The Following User Says Thank You to Bollox79 For This Useful Post:

     Wing Genealogist (09-11-2018)

  3. #12
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    A NGS/WGS (Next Generation Sequence/Whole Genome Sequence) test such as FTDNA's Big Y or Full Genome's tests are the "Gold Standard". They give the fullest results and (in general) would be the last Y-DNA test anyone would really need to take. However (as you have stated) cost is always a consideration. These tests are are in the range of (I believe) roughly 500 Euros (and more), and as such, they tend to be too high a price many folks are willing/able to pay.

    Autosomal tests, such as the Living DNA test, 23andMe, etc. give only VERY limited Y-DNA results. FTDNA's SNP Panel tests do provide a level of Y-SNP testing which refines their haplogroup at a much more reasonable cost (I believe the cost would be roughly 100 Euros). However, I cannot recall if FTDNA still offers a single Z156 SNP Pack test, or whether it has been broken up into three packs (DF96, DF98, and negative for both). I have privately emailed our Z156 Guru (Dr. Iain McDonald) and asked him about this. I will post his response (or he will) when I receive it.


    Ray
    Gedmatch DNA: M032736 Gedcom: 6613110.
    Gedmatch Genesis: WH4547538
    co-administrator: Y-DNA R-U106 Haplogroup Project

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     Bollox79 (09-12-2018)

  5. #13
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    I have heard back from Dr. McDonald.

    FTDNA no longer has a Z156 SNP Pack test. It is divided up into three SNP Packs (as I mentioned before) DF96, DF98 & negative for these two).

    The options are to either SNP test for DF96 and/or DF98 then take the appropriate SNP Pack test or to take the R1b-U106 Superclade Panel Test (about 100 Euros) from http://www.yseq.net/
    Gedmatch DNA: M032736 Gedcom: 6613110.
    Gedmatch Genesis: WH4547538
    co-administrator: Y-DNA R-U106 Haplogroup Project

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

     Bollox79 (09-12-2018)

  7. #14
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    Thanks for the help and the advices ! I'm saving money for a next test, so I'll use any informations i can find here to make a judicious choice.. EDIT : I was wondering which calculator like genesis could upload a living dna files ?
    Last edited by MagisterMilitum; 09-11-2018 at 10:13 PM.

  8. #15
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    Quote Originally Posted by MagisterMilitum View Post
    Thanks for the help and the advices ! I'm saving money for a next test, so I'll use any informations i can find here to make a judicious choice.. EDIT : I was wondering which calculator like genesis could upload a living dna files ?
    Magister,

    Did you manage to get into touch with my facebook friend the Frenchman who is also Z156+ like you? Just thought I would follow up and check!

    Cheers,
    Charlie
    Y-DNA: 4th GGF Adam Weaver born 1785 in Pennsylvania (most likely German) - Sergeant, US 17th Inf, War of 1812: R1b-U106-Z381-Z156-Z305/306/307-Z304-DF98-S1911-S1894/S1900-S4004/FGC14818/FGC14823-FGC14816/FGC14817 shared with 6drif-3!

    mtDNA: 3rd GGM Bridget Dana b. 1843 Ireland - T2b2b - Pagan Migrant Icelander SSG-A3 (grave 4?) - Sķlastašir in Eyjafjaršarsżsla, North Iceland is T2b2b. Relative of King Bela III of Hungary (his Y-DNA and autosomal kinsman buried near him had mtDNA T2b2b1)!

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