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Question re:cm's and 3rd cousin

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  • Question re:cm's and 3rd cousin

    I have someone who I'm 99% sure is a 3rd cousin, through the family tree.

    Our DNA matched 9.87cm and 5.88cm on chromosome 5.
    It also matched 6.36cm on chromosome 8.

    Does this seem like a realistic match for a 3rd cousin?

    Thanks.

  • #2
    Originally posted by Chester View Post
    I have someone who I'm 99% sure is a 3rd cousin, through the family tree.

    Our DNA matched 9.87cm and 5.88cm on chromosome 5.
    It also matched 6.36cm on chromosome 8.

    Does this seem like a realistic match for a 3rd cousin?

    Thanks.
    You also need to look at the total shared DNA. Per ISOGG, the possible range for 3rd cousins is 20-135 total shared cM, with a mean of 53 cM.

    Comment


    • #3
      Originally posted by hfp43 View Post
      You also need to look at the total shared DNA. Per ISOGG, the possible range for 3rd cousins is 20-135 total shared cM, with a mean of 53 cM.
      We have 49.43 shared segments, so that would fit right into that range.

      Thanks so much.

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