GENEALOGY-DNA-L ArchivesArchiver > GENEALOGY-DNA > 2008-09 > 1221180492
From: "Diana Gale Matthiesen" <>
Subject: [DNA] DYS conversion factors
Date: Thu, 11 Sep 2008 20:48:12 -0400
Oh, duh. I finally get it. I had mistakenly assumed that if you were tested at
FTDNA, you didn't need to do any conversions. Gads, how long I've held that
misconception. But knowing this does solve my other problem.
What I have to show at my project web sites is what the project members are
seeing on the "Y-DNA DYS Values" tab of their member pages, which is what is
shown on the FTDNA-generated versions of the web sites. If I were to start
doing any conversions on those numbers at my custom project web sites, it would
confuse the hell out of the members -- and complicate things for me (I've got
six projects to manage).
When bringing an "outsider" into my projects, what I need to follow is not the
instructions to convert other lab results to Ysearch standards (which is the
value that threw me in this case),
but to convert other lab results into "raw" (unconverted) FTDNA results, which
factors I can deduce from the above instructions.
I need to go back and check what I've done to the values for all the people I've
allowed into my projects who weren't tested at FTDNA. I've probably done at
least some of them incorrectly.
I'm soooo glad I brought this up. THANK YOU for straightening me out.
> -----Original Message-----
> From: On Behalf Of John Chandler
> Sent: Thursday, September 11, 2008 6:30 PM
> Subject: Re: [DNA] DYS464a-d becomes a-f
> Diana wrote:
> > Four members of this family have tested DYS 463 and
> returned a value of 21,
> > which I believe is modal for I1. This new member is 19,
> that is, after
> > following the instructions on this page to convert values
> from Ancestry-DNA to
> > Ysearch (=FTDNA?):
> > http://www.ysearch.org/conversion_page.asp
> The four who tested and were reported as 21 -- did they test using the
> FTDNA advanced order system? If so, then their results also
> need to be
> converted before entering in Ysearch. The conversion is to
> subtract 2,
> just like the conversion for DNA-Fingerprint.
> John Chandler
|[DNA] DYS conversion factors by "Diana Gale Matthiesen" <>|