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Does it mean something specific about how we could be related? Look at Blaine's probability chart here: Chart5and you will see that some ancestors have a much higher chance than others (in the same generation) of contributing an X segment.If there are no autosomal segments that meet the threshold, then you are unlikely to have a close relative because most third cousins and below will show up as autosomal matches.

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For example attached picture is my father to me(Male) on X. If he tested at then his ID starts with A___ and he may have an extensive pedigree listed there and you may find collateral lines down to present.

Others could confirm this to be true because it is only a hypothesis based on a few examples that I have observed. This is what made me curious, since in addition to the 22 c M full match, around 50% of the entire remainder of the chromosome shows as matching.

I had seen the probability chart before, but never paid close enough attention to the actual numbers - very interesting. I'm guessing that it's extremely likely that they report 2 characters per position as well, since I only see either full base pair matches, or none... @Kathy Johnston: Regarding the small/tiny segments - yes, there are a great many small matching areas.

) that match at GEDmatch then I think that is a sign that you share the same ethnic (population) makeup with this individual through the X chromosome and you may share a lot of distant geographically based ancestry on that line.

Others could confirm this to be true because it is only a hypothesis based on a few examples that I have observed. if he tested at 23and Me he will have an M___ ID number and you can ask him to check his ancestry composition on the X and see what the Speculative, Subregional resolution shows.

Even small segments can be significant for a male on the X because there is not the same likelihood of pseudo-segments caused by having two Xs.

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