GENEALOGY-DNA-L ArchivesArchiver > GENEALOGY-DNA > 2011-01 > 1294174879
From: "Debbie Kennett" <>
Subject: Re: [DNA] Recommendations for DNA testing
Date: Tue, 4 Jan 2011 21:01:19 -0000
There are many reasons why someone who tested at Ancestry can benefit from
re-testing at FTDNA.
One of the main reasons is that Ancestry don't do any SNP testing, and they
therefore get some of their haplogroup predictions wrong for both Y-DNA and
mtDNA, particularly if the haplogroup is somewhat unusual. FTDNA will do a
free Y-SNP test if they can't predict the haplogroup and quite a few of my
project members have benefited from this service.
Although not involving Ancestry I came across one person who had been tested
with two different companies (Oxford Ancestors and Roots for Real) who both
incorrectly predicted the haplogroup as G. He eventually had a free SNP test
at FTDNA and was found to be haplogroup F.
People also re-test with FTDNA to benefit from the larger database, to order
extra markers, to join haplogroup and/or geographical projects and to take a
deep clade test.
I've not heard of any cases of people testing at different companies and
being given different values for their markers (other than the companies
reporting the markers in different ways) though I suppose in theory this
could happen. It's certainly helpful that some people have tested at
different labs so that results can be compared for accuracy.
|Re: [DNA] Recommendations for DNA testing by "Debbie Kennett" <>|