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Untangling the Centimorgans on Your DNA Test • FamilySearch

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June 27, 2022 edited December 23, 2024 in Blog Comments EN

imageUntangling the Centimorgans on Your DNA Test • FamilySearch

Understanding what centimorgans are and viewing how they are measured on a centimorgan chart can help you make sense of your DNA results.

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Comments

  • S.LSykes
    S.LSykes ✭
    June 27, 2022

    I have what is called a double match. Do you have information on that?

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  • Cathy Bontemps
    Cathy Bontemps ✭
    July 9, 2022

    How many Centimorgans does 1 person have? I know you get 1/2 from mom and 1/2 from dad, but how many do you have altogether?

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  • Henry Larsen
    Henry Larsen ✭
    September 4, 2022

    If you hav't get answer I can tell you that according to my knowledge it should be arround 7.000 cM.

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  • Beth of Montrose
    Beth of Montrose ✭
    September 16, 2022

    Thank you, familysearch and Annelie, for all of us lay people understand cM

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  • Beth of Montrose
    Beth of Montrose ✭
    September 16, 2022

    Is this wording correct:

     centimorgan is a measure of the probability that a shared DNA segment of a particular size will be swapped between chromozones during egg fertilization, which may determine the likelihood of sharing genetic traits.

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  • melaniearthur
    melaniearthur ✭
    April 11, 2023

    I'm trying to find my father, I been talking to a man who maybe my uncle or half sibling I found him through DNA on ancestry. This is what ancestry says Shared DNA: 1,529 cM across 40 segments. Is that sound right, could he be either my uncle or half sibling with those numbers

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  • melaniearthur
    melaniearthur ✭
    April 11, 2023

    Possible DNA relationships

    This table shows the percentage of the time people sharing 1,529 cM have the following relationships:

    PercentRelationship99%Grandparent

    Grandchild

    Half sibling

    Aunt/uncle

    Niece/nephew

    <1%1st cousin

    Great-grandparent

    Great-grandchild

    Grandaunt/granduncle


    This is through ancestry

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  • David23391
    David23391 ✭
    July 8, 2023

    I have a half nephew at 1403 but my and my and brother's father's are brothers meaning it should be higher than the half nephew upper value that is 1446, does this suggest who I thought was my father actually wasn't.

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