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Sharing Different cMs at Testing Companies?

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  • Sharing Different cMs at Testing Companies?

    https://www.youtube.com/watch?v=Veb6vn_BFRY

    ........and note that MH will sometimes combine segments.

    Blaine Bettinger presented this beautifully, easy to understand.
    Last edited by Biblioteque; 23rd October 2018, 11:12 AM.

  • #2
    Interesting video, but Blaine Bettinger leaves out the most interesting information about his cousin match.

    How is it that 5th cousins share 48 to 67 cM of DNA? Is it endogamy or is it sticky DNA or some other outlier?

    53 cM is the nominal amount for 3rd cousins and 3.32 cM is the nominal amount for 5th cousins. At the shared cM project 5th cousin has an average of 25 Cm and a range of 0 to 94 cM.

    DNA testers should already be aware that the DNA testing companies use different chips and different matching algorithms and different segment counting rules to determine total matching cMs.

    I greatly dislike that FTDNA includes small segment matches in their match total cM.

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