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Single DNA segment - 28cM: Passed Unchanged Since 1600's.

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  • LindaT
    replied
    Is it possible you are getting a double dose of the common ancestor's DNA because of subsequent cousin marriages?

    I've got a situation like that where a predicted 4th cousin is actually a 7th. It's possible I haven't found a more recent common ancestor who is responsible for my 24cm block but I do know I"m getting DNA from the known common ancestor from two different paths.

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  • ursus
    replied
    Originally posted by JOlson View Post
    Highly unlikely. Much greater chance that you have a common ancestor that's not showing up on your paper trail.
    Agreed.

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  • JOlson
    replied
    Highly unlikely. Much greater chance that you have a common ancestor that's not showing up on your paper trail.

    Leave a comment:


  • shandy4473
    started a topic Single DNA segment - 28cM: Passed Unchanged Since 1600's.

    Single DNA segment - 28cM: Passed Unchanged Since 1600's.

    Good Day Everyone,

    I would like to request some input. I have a match which we will call David A. Via 23andMe - David A and I share a single DNA segment of 28cMs. This DNA segment resides on chromosome 3. It turns out that via investigation performed by myself, our last common ancestors are Richard Goode (1600-1650) and Wife Whitley 1590.

    Would one agree that a single DNA segment of 28cM can pass unchanged (via recombination) since the 1600's to present day descendants?

    Thanks
    Steve
    Attached Files
    Last edited by shandy4473; 11 September 2012, 11:59 AM.
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