Re: questions about various dna ethnicity companies #dna


Raina Accardi <raina.accardi@...>
 

Your DNA ethnicity estimate will change based on improved data >from
growing sample populations as Ancestry/FTdna/23andMe etc update their
ethnicity calculators. Your ethnicity breakdown does not tell you when
your ancestors lived, only that you have similar DNA to other people
whose ancestors lived in certain areas. In terms of finding DNA matches,
the autosomal DNA tests are most useful within 6 generations. So if a
generation is about 30 years that would be about 180 years. However it
is still possible to make connections back 10 generations if you get
lucky and have a well documented tree (and your match also has a well
documented tree!)

As far as going back beyond a few hundred years and paper records, you
can take the mitochondria DNA test (MtDNA) or the YDNA test to get DNA
matches that reach back before paper records. You might be able to pick
out patterns of migration based on your matches individual family
histories. The haplogroups you will be assigned with those tests have
histories that show when (1000s of years ago) and where the original
mutation in that type of DNA occurred. The autosomal test only tests to
within a few hundred years as you said. I believe Family Tree DNA and
23andMe can do the mt-DNA and Y-DNA tests.

Raina Accardi
Saugerties, NY, USA

From: ava rosenblum <gsand@visi.com>
Date: Sun, 16 Sep 2018 12:09:44 -0500

Ancestry just updated their dna profiles. Ten years ago, they
advertised as going back as much as 1,000 years. However, now they
are stating that they go back only a few hundred years. The update
told me what I know >from my own document research.
(I went >from being 97 percent European Jewish, with 1 percent Italy/
Greece, 1 percent central Asia, and 1 percent Eastern Europe to 100
percent Euro Jewish.)

Based on a quick online search, I don't believe any of these
companies offer information that goes back more than a few hundred
years.

So, I thought I'd send in a note here in case there is a company that
someone knows of that can assist beyond document analysis of family
records.

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