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  • X Match Confused

    Hi guys,
    I'm very new to this stuff. I got my FF matches back today. I've also taken the mtDNA test. I am an adopted female given up for adoption. I know my biological mom's name and I have a half sister and half brother. My half sister took the mtDNA test and we came up in the same Haplogroup. She didn't take the FF test.

    I have no clue of my parental father other than my biological mother told me he moved from Virginia to South Carolina after I was born (1970. They have no contact and I don't talk with my maternal mother.

    Where is the first place I should be looking at for my paternal DNA. I thought I understood the X match but if I have an X match on a female that is 2-4th cousin that I don't see in my maternal family tree would that mean it could be a x from my paternal grandmother? Sorry I'm so confused on this.

  • #2
    Unless the segment on the X chromosome is over 7 cM, some say over 10 cM, just ignore it. I don't think FTDNA should report segments on the X chromosome that are under 7 cM. Segments under that are likely to be just in the general population.

    You probably won't get much info out of mtDNA testing, other than verifying that you and your half-sister probably have the same mother. See if your half-sister will do a Family Finder test.

    I also recommend you do a DNA test at Ancestry. Their complete lack of tools is disgraceful, but sometimes the size of their database alone is a great help when looking for close relatives.

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    • #3
      Paternal DNA

      DebbieH, you are good to go!

      The FF matches you got back today are your cousins from BOTH of your parents, Mother AND Father.

      The X is actually Chromo 23, and has a different inheritance path, and threshold for cMs and according to gender, than Chromos 1-22.
      Last edited by Biblioteque; 12th February 2018, 02:51 PM.

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      • #4
        It's a 14.38 cM on the X match. I guess I'll just have to start emailing people.

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        • #5
          Originally posted by MoberlyDrake View Post
          Unless the segment on the X chromosome is over 7 cM, some say over 10 cM, just ignore it. I don't think FTDNA should report segments on the X chromosome that are under 7 cM. Segments under that are likely to be just in the general population.

          You probably won't get much info out of mtDNA testing, other than verifying that you and your half-sister probably have the same mother. See if your half-sister will do a Family Finder test.

          I also recommend you do a DNA test at Ancestry. Their complete lack of tools is disgraceful, but sometimes the size of their database alone is a great help when looking for close relatives.
          Thank you. I was thinking of doing one with Ancestry for the same exact reason.

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          • #6
            I had posted a lot of questions about the presents and absences of X to try and sort out who was on mother/fathers side. I was pretty much told do not trust X farther than a generation or two. Also she could match X on the fathers side, so very very confusing on top of being unreliable. So I do not use X at all.

            This is flustering when a person is adopted and has one 3rd cousin and a bunch of 4th cousins.

            I know this may not help much other than be a warning to watch out for where X might lead you.

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