GENEALOGY-DNA-L Archives
Archiver > GENEALOGY-DNA > 2005-05 > 1115053151
From: "Ken Nordtvedt" <>
Subject: Re: [DNA] Newbie: National Geographic, Relative Genetics, DNA Heritage,Family Tree DNA etc
Date: Mon, 2 May 2005 10:59:11 -0600
References: <050220051524.19064.4276462C00055A0100004A782205884484050B989A0E00@comcast.net>
We are now coming on a year since the Rootsi et al paper appeared in the
journal literature. Even FTDNA was impressed enough with this paper to put
it in their library. Yet their Ysearch still has no category for I1c (or
the I2 FTDNA as relabeled it). If you are a serious browser of the
haplogroups labels folks in Ysearch have with their haplotypes, you will
find that almost half the 900 or so I1a haplotypes in FTDNA's Ysearch are
still called "unknown"; and most of the rest are simply called "I". Too
many are called I1b. It is difficult to determine an accurate allocation of
responsibility for such weak haplogroup labeling to the testing company or
the owners of the haplotypes, but one would think that those who set up this
site would feel that such major under-representations as "unknown" or
mis-representations of haplogroups for the haplotypes within their sponsored
database needed to be corrected by email bulletins or the like to those who
entered the haplotypes into the database. They have the needed information
to do that.
As far as I know FTDNA will still commercially test for only "I" or I1b
today. If you already suspect with high probability you are I but seriously
doubt you are I1b, they will not test the average customer for I1a, I1a1,
I1a4, I1c (a.k.a. I2) (I did hear from someone off-list who says they were
given a not generally available test for I1a1 or I1a, however). But
fortunately STR-based assignments for I1a or I1c can presently be made with
high reliability if someone has 25 or more of the markers measured, so some
of us learned where we "fit in the world-wide scheme of things" without the
SNPs.
Ken
----- Original Message -----
From: <>
To: <>
Sent: Monday, May 02, 2005 9:24 AM
Subject: Re: [DNA] Newbie: National Geographic, Relative Genetics, DNA
Heritage,Family Tree DNA etc
>
It is only with a comparison to samples that have had specialized SNP tests
(rather like identifying the mtDNA "Seven Daughters of Eve" for the Y
chromosome) can you be certain where you fit in the world - wide scheme of
things - in other words your haplogroup.
This thread: