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How many X matches do you have?

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  • #16
    I still only have 10 X-matches. FF matches keep coming, but no new X-matches along with them.

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    • #17
      My mother has 63 X matches. My daughter has 147 X matches. I (the male in the middle)only have 8 X matches. Two of those are my mother and my daughter. Looking through my daughter's matches, I can see lots that my mother has. Something is askew here.

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      • #18
        Originally posted by timjes View Post
        My mother has 63 X matches. My daughter has 147 X matches. I (the male in the middle)only have 8 X matches. Two of those are my mother and my daughter. Looking through my daughter's matches, I can see lots that my mother has. Something is askew here.
        Females clearly have more identical by state matches because they have more chances to coincidentally match on their two chromosomes. You only have one X so it is much more likely to be IBD.

        Can you do me a favor when you have time and others in the same boat as you (males sandwiched between females), could you let us know at what point this disparity disappears? Click on all these X matches and compare the total numbers of matches at 1 cM, 3 cM, 5 cM and 10 cM.

        Even under normal circumstances, you should expect more matches for females than for males. After all, females have twice as many Xs as males. But there should not be this much difference unless there is considerably more IBS. I'd like to plot it out. Those segments that your mother and daughter share that you don't share should disappear at a certain point and I would also like to know the distance in cM when the segment disappears. Is it the same for both females?

        It is also helpful to know total FF matches for each of them. Thanks.

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        • #19
          I have about 280 X-matches out of nearly 3400 FF matches.
          My father has 292 out of ~3000.
          My mother has 1130 out of 3371.

          I thought it kind of odd when X-matches became available it was this much more. More, of course, but I expected closer to 2X, not 4X.

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          • #20
            sjadelson: Wow, and double Wow! You have 3400 FF matches. How many Gedmatch matches?

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            • #21
              Originally posted by marietta View Post
              sjadelson: Wow, and double Wow! You have 3400 FF matches. How many Gedmatch matches?
              I don't know. It cuts off at 1500.

              No need to be jealous. This number is not atypical for Ashkenazi, and of those 3400 I have yet to make a new documented connection that I wasn't previously aware of.

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