Irene knows her blood type is B, but William does not know his blood type. However, William knows that his mother and father both had blood type A. Irene and William's first child is a boy with type O blood. Based on this information, William's blood type could be .
(Hint: Draw out the pedigree)
a. B only
b. either B or O
c. O only
d. either AB or O
e. A only
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Irene knows her blood type is B, but William does not know his blood type. However, William knows th...
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