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Thread: If SNPs are random copying errors, can two unrelated people share the same SNP?966 days old

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    Default If SNPs are random copying errors, can two unrelated people share the same SNP?

    I was viewing this thread, but it closed before there was an answer I was happy with.

    Why can't someone from haplogroup O share a mutation at the same position on the y chromosome with someone with the haplogroup E?

    E.g. A man is positive for O-F265, M119, M110 (taken from yfull just as an example), and then he is found to be positive for E-M35 but negative for everything else above. Is this not possible, for the O man to have separately developed the mutation on the y chromosome for M35, from other M35 men that are positive for everything else above M35?

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