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Confirm paternal half-sister

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  • Confirm paternal half-sister

    Can FF test be used to confirm my paternal half sister? After doing a bit of reading it mentions females getting x from both parents but males only getting x from their mother so was wondering if the Autosomal test somehow could be used to confirm my half sister and I are actually related.

  • #2
    Originally posted by ShawnN View Post
    Can FF test be used to confirm my paternal half sister? After doing a bit of reading it mentions females getting x from both parents but males only getting x from their mother so was wondering if the Autosomal test somehow could be used to confirm my half sister and I are actually related.
    Yes it can

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    • #3
      And it's not solely a matter of the X chromosome. The total amount of DNA you share will prove it. They will assign you a relationship of "Half Siblings, Grandparent/ Grandchild, Aunt/ Niece" if you are half-siblings, because all of them share roughly the same amount of DNA. Double cousins also fall in that category, though they don't state that.

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      • #4
        See https://isogg.org/wiki/Autosomal_DNA_statistics#Table

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