GENEALOGY-DNA-L Archives

From:
Subject: [DNA] Personal FTDNA mtDNA pages (was Revisit,case study 162-209-519...)
Date: Tue, 1 Jan 2008 11:13:57 EST

> As Anne has said I have now found on my personal page
> at FTDNA on My Maps on high resolution the H5a and H7
> individuals we were talking about and now I found a H2a
> on the map. These people are on Mitosearch as in these
> subclades but we all match on HVR1 and HVR2. I don't
> know if these are lab errors or what. Something is definitely wrong.
>
> Marianne Dillow
----
Maybe wrong, maybe not wrong...
It is too bad project administrators
don't have access to all the personal
page matches at FTDNA. Not only could
we pick up interesting trends, we could
also scour the pages for mistakes in
mtDNA results. It also would be nice to
know exactly which markers are being
tested to determine or rule out the sub-clades.
.
I wonder why Family Tree reports exact matches
the way they do. People who match at HVR1
but who do not match at HVR2 only because of
the 309.2C are considered a mismatch because of
that one minor difference. However, these same
people are considered an exact coding region
match when they order the full sequence.
So in other words, you may match a person
at HVR1 and FGS but not in the HVR1 plus HVR2
section.
.
Another problem is when there is heteroplasmy.
I think this type of mosaicism is fairly common. We have
an H2a2 individual who had some cells containing an
HVR1 marker and other cells that did not have this marker.
She had no matches at all on her personal pages because
this marker was first read as being absent.
So, in other words, if half of your body matches
many others at HVR1, and you otherwise have
exact matches at the FGS, you are still not
considered having any matches on the personal
page. That is a rather lonely existence,
especially for those who go to all the trouble
and expense of ordering the full sequence.
Reminds me of the song in Fiddler on the Roof:
"Matchmaker, Matchmaker, make me a match, find
me a find, catch me a catch..."

Kathy J.




**************************************See AOL's top rated recipes
(http://food.aol.com/top-rated-recipes?NCID=aoltop00030000000004)

This thread:

• [DNA] Personal FTDNA mtDNA pages (was Revisit,case study 162-209-519...) by

  • Re: [DNA] Personal FTDNA mtDNA pages (was Revisit,case study 162-209-519...) by William L Harvey <>
  • Re: [DNA] Personal FTDNA mtDNA pages (was Revisit,case study 162-209-519...) by marianne dillow <>
  • Re: [DNA] Personal FTDNA mtDNA pages (was Revisit,case study 162-209-519...) by