eli5: if we all come from the same biological mother (look up “mitochondrial eve”) how did we manage to get 8 blood groups?

Question

How did we manage to become so diverse if we all come from the same “mother” is my question. The blood thing is a correlated thing

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Answer 1

Children of the same mother do not get the exact same mix of genes passed on to them. That’s why siblings may have similar looks but not the same eye or hair color. One sibling may have straight hair while the others are curly.