How can a someone completely unrelated be the best match fora kidney or bone marrow?
In: Biology
Being related by blood means you had a similar ‘pool’ of DNA to pull from. But DNA is shuffled around a lot during reproduction. Out of a ‘family pool’ of 1,2,3,4,5,6,7,8,9,10, for example, not everyone will be dealt two 5s.
But, someone from another ‘family pool’ of 5,6,7,8,9,10,11,12,13,14,15 might be.
In sexual reproduction, a lot of chance is involved.
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