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  • ydna 67 match

    How close a match is 65/67markers,genetic distance of 2?

    Are we likely from the same family?

    Thanks

  • #2
    Originally posted by jackie65 View Post
    How close a match is 65/67markers,genetic distance of 2?

    Are we likely from the same family?

    Thanks
    That is a very close match. If you share the same surname or a variant of it, I would say the odds are that you are related within genealogical time.

    My own youngest son is a 65/67 match for me. His older brother, however, matches me exactly, as does a second cousin once removed (our most recent common ancestor is my 2nd great grandfather, his great grandfather).

    But mutations have to happen sometime.

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    • #3
      I am involved in a yDNA study group for men who descend from the same ancestor born about 1785. In the group of men who descend from his son (1809) there is consistently a 65/67 match within the group, but the two mutations will differ from one guy to another, another marker or so to men who descend from their likely immigrant ancestor who was born about 1630ish. We are just one example, but a marker mutation every 100 - 150 years seems to be what has fit this group.

      Likewise, my son has a 63/67 match with a man who shares his surname. Their ancestors came to the Colonies in 1635 and 1690 to different states and apparently never crossed paths. Their origins are to two villages in England, about 15 miles apart, and we suspect the shared ancestor was probably born in the 1500s.

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      • #4
        Thank you very much for the information

        As my father was adopted he never knew his father or even his name,would it help now to upgrade my match to 111 markers

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        • #5
          Only if the matches have also tested to 111.

          Does he have more than one 67 marker match? Do the matches have the same surname?

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          • #6
            Originally posted by jackie65 View Post
            Thank you very much for the information

            As my father was adopted he never knew his father or even his name,would it help now to upgrade my match to 111 markers
            A 67 marker match can be a brother or cousin and may also be a relative in the distant past. Upgrading to 111 markers is not going to resolve your dilemma. Even with two Big-Y tests one cannot be absolutely certain that two men are related recently. I know a couple of men who don't have the same private SNPs.

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            • #7
              Originally posted by jackie65 View Post
              How close a match is 65/67markers,genetic distance of 2?

              Are we likely from the same family?

              Thanks
              This is a statistical outlier, but a member of my surname group and I were GD3 at 67 markers, but GD9 at 111. I recommend 111 markers whenever there is a "close" match at 67.

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              • #8
                That is an odd one. Both of my two closest matches (outside my own immediate known relatives) began as 64/67 and went on to be 107/111. They both share my surname (one spelled Stevens, as mine is spelled, and the other spelled Stephens), but we haven't found our mrca yet.

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                • #9
                  Thanks again,my brother has already upgraded to 111 markers no matches at present.

                  He has one match65/67 gd 2 and 5 other matches 67 markers gd 7.

                  Both different surnames.

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