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Archiver > GENEALOGY-DNA > 2008-02 > 1202481908


From: Vincent Vizachero <>
Subject: Re: [DNA] When is SNP Testing Useful for Genealogists?
Date: Fri, 8 Feb 2008 09:45:08 -0500
References: <d69.2043a34a.34ddbe56@aol.com>
In-Reply-To: <d69.2043a34a.34ddbe56@aol.com>


If there is already a close match at 43 markers, the additional
resolution provided by going to 67 markers would not (in my opinion)
be the most wise use of funds due to the low average mutation rate of
markers in the 38-67 panels. Some families have found that upgrade
useful, and you never know until you test it, but it wouldn't be my
first choice.

If both sides of the match are agreeable to additional testing, I
think that picking a set of fast-moving markers from FTDNA's Advanced
Orders panels would be more efficient - more expected mutations per
dollar. Some of the multi-copy markers especially (e.g. DYF399X and
DYS724 among others) can be very helpful for discriminating otherwise
close matches and for sorting out closely related family lineages.

Vince


On Feb 8, 2008, at 9:16 AM, wrote:

> Now another question: suppose someone who is R1b and has taken the 43
> marker test at DNAH or RG wants to try more tests. Where should
> he start--with a
> 67 marker upgrade at FTDNA (I think that would be my
> recommendation, although
> I would also advise not doing it until he finds a reasonably close
> match
> worth investigating further) or an SNP test?

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