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Subject: [DNA-NEWBIE] mutations
Date: Fri, 05 Jun 2009 12:31:02 -0400
We have 11 people tested with
the same surname with solid evidence of two common ancestors, one who
died in 1789, and one who died in 1808 -- probably uncle and nephew and
one questionable relationship.? Four of the lines have exactly the same
results on 37 markers, two have 36/37, four have 35/37, one has 33/37
and the questionable one is greater than that. Three lines come from
the same ancestor one generation down the line, including the one with 33/37, and it is interesting
that all three of those lines have reversed numbers from the rest of
the group on two markers so you can tell that he fits right into the
pack. I may not be counting the differences correctly but that is how
it looks to me. Also seems to help if you have more people in the test
group so you can get a better idea of how one looks with the whole set.
So the answer as to when mutations occur that I originally asked was
very helpful to see that all these people could have had the same
ancestor and the mutation happened in one of the sons at some point in
time. Thank you so much for your help. So apparently about two
mutations is not unexpected in this time period.Take care. Marilyn
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