[Edited Message Follows]
Hi,
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I tried to find a haplogroup that could possibly match the answer I got from FTDNA?in December 2023:
°Ú¡±Õ The short answer is yes, in very rare instances we have found SNPs that have been previously seen in only one other tester in the database. These situations have allowed us to form new branches.
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Among the potential candidates, I found one that I find quite interesting, and that I would like to share: R-S10807.
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As of June 5, 2024 (version 4818 of Y-DNA_HaploTree of June 3, 2024), R-S10807 is a terminal haplogroup, consisting of the single SNP S10807, located downstream of R-U106 in the haplotree, immediately downstream of R-Z301 (TMRCA of R-Z301 ~2500 BCE), and made up to date of only 2 testers, only 1 of which is a bigY whose EKA would have its origins in England (this tester is also in the R-U106 group, but locates its EKA in the state of Ohio in the USA). The second tester being of unknown origin.
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S10807:
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position: 8 036 213,
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ancestral: G,
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derived: A,
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region: p11.2.
To my knowledge, position 8 036 213 of the Y chromosome is covered by the GSA chip used by FTDNA. S10807 (A to G mutation) is currently the only SNP identified by Ybrowse at this position of the Y chromosome. Still according to data from Ybrowse.org, S10807 was discovered in 2014 by Jim Wilson in an R1b-DF21 individual (a priori currently R-L720 or downstream of it).
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The Y-DNA Haplotree currently lists (version 4818) 3 haplogroups containing S10807:
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E-BY200986, block of 6 SNPs
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R-S10807, 1 single SNP (R-U106>R-Z2265>R-BY30097>R-FFT8>R-Z381>R-Z301>R-S10807)
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R-L720, block of 37 SNPs
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For its part, Yfull lists 5 haplogroups associated with S10807:
After going back in time, using the small data I still have, it turns out that FTDNA was already aware of this branch of the Y tree before November 29, 2022 (version 2936 of the Y-DNA Haplotree ). At this time, only one tester was associated with it (the only bigY tester identified to date). In the version published on November 18, 2023, Discover still only included one kit for R-S10807. As well as version 4267 of the Y-DNA Haplotree from November 10, 2023. Ditto for version 4564 from February 26, 2024.
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In deduction, it seems quite likely to me that an Family Finder tester (FF), probably not having provided an origin for his EKA, was added to this terminal haplogroup between February 26 and the beginning of June. Of course these deductions are only mine, and in this matter I regularly make mistakes! As to why FTDNA had already created a R-S10807 branch in its Y Tree before December 2022, when its public databases only seemed to have one positive tester, this remains a certain mystery to me.
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If anyone has some observations contradicting my deductions (which may obviously turn out to be inaccurate), or new elements to add on R-S10807, I would be grateful.
Cheers,
Ewenn
Ewenn