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A woman with type A blood is claiming that a man with type AB blood is...

A woman with type A blood is claiming that a man with type AB blood is the father of her child who is type B. Show all the possible crosses; remember that the woman can have AA or AO genotypes. Could this man be the father of the child? How? Assuming that he is the father, what must the mother’s genotype be?

Show me how you figure out the crosses (Show work) Words mean nothing if I can't understand what this problem is trying to tell me.

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