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Half-Aunt?

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  • Half-Aunt?

    I have been trying to identify my biological father. To help me exclude DNA matches from my maternal side, my maternal aunt tested with me. I tested at all three sites. I tested her at Ancestry.com, so I could compare the results there, and transfer her data to FTDNA and to GEDMatch.

    I got a bit of a surprise when I compared her data to mine here at FTDNA. She and I share 860.3 cM, which calculates out to about 12.6%. We should share about 25%. I've often wondered if she and my mother had the same father, but the family story is that they do. Am I looking at this data wrong, or is she my half-aunt?

    I have not had a chance to see how we compare at GEDMatch, as the site went down before her data finished batch processing.

  • #2
    That sounds like a half aunt to me, percentage wise anyway.

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    • #3
      Reference

      http://www.isogg.org/wiki/Autosomal_DNA_statistics

      Check out this chart, I think it's a good reference for matches.

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      • #4
        I share 1710cM's w my Uncle so yes it sounds like she is a Half- Aunt.

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