GENEALOGY-DNA-L Archives

From:
Subject: Re: [DNA] "Tribe X"
Date: Sat, 15 Sep 2001 19:02:04 EDT

In a message dated 09/14/01 2:35:21 AM Pacific Daylight Time,
writes:

> As far as I can see, this interesting correlation has not been reported to
> date (unless you know differently) and it will be interesting if any other
> Y-chromosome "tribes" develop as more information comes in from more
> studies. This will rely on people with family names of apparently no
>

A centralized database would be most useful. Family Tree DNA does maintain a
database and will report exact matches to people who have given their
permission to be contacted, but near matches are also potentially interesting.


> On another issue, the US Labs do use 12 sites for their results, only six of
> which appear to be common to those with Oxford Ancestors Results. IS any
> information yet available on the 6 unknown sites used by these labs so
>


The unknown sites are Family Tree DNA proprietary markers. Apparently these
markers will be published at some point, but they will be different than
existing public domain markers, so correlations beyond the 6 common markers
will not be possible.

It should also be noted that FTDNA also uses a different method for reporting
results of the six public domain markers. Their results can be translated to
standard values, but you need to double-check whether web sites are using
numbers directly from FTDNA or translated values. Even so, having 6 markers
in common is probably not informative enough to be worth pursuing.

There are software programs for analyzing similarities in data, using
terminology such as clustering and neighbor-joining trees. I think some of
these might be relevant for genealogical purposes. My husband studied them
in his bioinformatics class, but I'm not sure if any of them are available
for use on a personal computer. Large data sets are very intensive
computationally, but we don't have very large datasets (yet!). This is
something I'd like to pursue when I get "a round tuit."

Ann

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