Thank you very much, Linda. So I will continue to keep the information on where on which
chromosome. But it will be a waiting game as I don't have enough DNA information on
known connections. At least I am not from a highly endogamous group! Cathryn
On 26 April 2019, at 22:03, "F.T.C." <familytreeclimber1988(a)gmail.com>
wrote:
Re: [GLA] DNA to find cousins
Knowing which chromosome contains shared genes and in which position
is VERY useful in searching for cousins. If you see that an unknown
cousin matches both you and someone else whose relationship to you is
known, then you can be pretty sure that the common ancestor you share
with the unknown cousin is on the same line that you and your known
relative share, assuming the shared segment is long enough not to be
identical by chance or identical by state (IBC or IBS) and that you're
not from a highly endogamous population group whose frequent
intermarriages within the group make DNA analysis more complicated.
Little by little as you identify more and more shared segments as
having been inherited from a particular ancestor or ancestral couple,
it will become easier to fit new cousins into your family t,ree and,
with any luck, build on shared research to trace your common ancestry
further back in time.
If you haven't DNA tested yet, consider testing with a company that
provides a "chromosome browser" so that you can see where you and your
matches share segments on particular chromosomes. Also consider
uploading your raw data to a reputable third-party web site like
GedMatch so that you can take advantage of the many DNA analysis tools
they provide.
Finally, consider browsing blogs written by knowledgeable genetic
genealogists such as Blaine Bettinger and Roberta Estes, who both do
an excellent job of educating the genealogical community on how to use
DNA in genealogical research.
Best of luck to you!
Linda
On 4/26/19, glamorgan-request(a)rootsweb.com
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