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The Bottom Line is ...
"These Y-SNP tests are a supplement to—not a replacement for—the Y-STR tests that have been our staple until now."
—David R. Dowell Ph.D., NextGen Genealogy: The DNA Connection, 2014, page 40
https://www.google.com/books/edition...sec=frontcoverThere are two methods of testing the Y chromosome — Y-STR and Y-SNP. ... of repeats within a marker is calculated, we can compare the results of that marker plus a few other markers to see whether two or more individuals are related.
Big Y Results: https://archive.is/StuqX/4d04c2386d9...1a1117bb0e.png
Surnames: https://archive.is/8X3Se/c22f1c409a9...4d7415f2b3.png
Countries: https://archive.is/3TeCo/f2d6abb8878...fe75b0006c.png
23andMe: https://archive.is/LUNir/25a55e62819...bc0b675b15.png
Paternal Haplogroup: https://archive.is/Cd67Q/d58d3440375...0a9fb6cbbc.png
From: Roots for Real
Sent: Friday, 14 January 2022 8:25 AM
To: VIK
Subject: Y discrepancies
Well, I would not put it that way. The Y SNPs and the Y STRs are on the same Y chromosome, so they have to point towards the same result. If they do not, then that is a fault of the company lab work, of the company database or of the company algorithm, not the fault of your Y chromosome.
Regards,
Peter
Dr. Peter Forster
and your Roots for Real team
Genetic Ancestor Ltd.
Cambridge, UKRoots for Real
Sat 15/01/2022 8:55 PM
Thanks Vik. I have now looked at your original email from 6 Dec 2021, when you submitted the Y reports to Roots for Real, and those two reports, from DDC and from DNA Solutions, claim E1b1b.
So this potential error is nothing to do with FTDNA. I had wrongly assumed from your thread that this was the FTDNA error you were referring to.
Regards,
Peter
Dr. Peter Forster
and your Roots for Real team
Genetic Ancestor Ltd.
Cambridge, UK
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