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Full siblings each inherit half their dna from each parent prior to recombination. After recombination their shared dna, as identified in an autosomal test, will be in some range around 50%. I suspect the distribution of shared dna among siblings over a large population would resemble a bell curve. But has anyone established just what that range might be in more practical terms? Would it be 30%-70%? 40% to 60%? Obviously if it gets close to 25% FTDNA would probably no longer identify them as full siblings.
And taking it a step further - what kind of range might be expected for half siblings. The target would be 25% but could it go as high as 40%?
Has any research been done in this area?
And taking it a step further - what kind of range might be expected for half siblings. The target would be 25% but could it go as high as 40%?
Has any research been done in this area?
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