Archiver > GENEALOGY-DNA > 2010-11 > 1288885290

From: Larry Vick <>
Subject: Re: [DNA] FTDNA haplogroup prediction more sophisticated thanbefore?
Date: Thu, 4 Nov 2010 08:41:30 -0700 (PDT)
References: <0df101cb7c2e$6544ab10$2fce0130$@org><>
In-Reply-To: <>

When FTDNA predicted one kit with 12 markers was predicted as Q while another
with 12 markers (and the same haplotype) was predicted as Q1 FTDNA said:

In 2005 the U of A started to use a few (2) extra markers to act as check values
so that when we pulled more DNA to run an upgrade we'd have a marker in place
that would allow us to know we had pulled the right DNA.  So in the new
predictor we use those 2 check values as more data to refine the haplogroup
prediction...since 15634 is an old samples and never upgraded we have the prior
data that predicts him as a Q while the newer test takers we can actually
predict as a Q1.

From: Vincent Vizachero <>
To: ;
Sent: Thu, November 4, 2010 10:47:42 AM
Subject: Re: [DNA] FTDNA haplogroup prediction more sophisticated than before?

My understanding is that FTDNA has, for many years, been using 14 and 
not 12 markers for haplogroup prediction.

I think that, in addition to the 12 reported markers in the first 
multiplex, DYS448 and DYS438 are run silently but my memory may be 
faulty on that point.


On Nov 4, 2010, at 10:41 AM, Lawrence Mayka wrote:

> How did FTDNA arrive at that?
> Is FTDNA now using more than 12 markers for its haplogroup 
> predictions?

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