Aman heterozygous for blood type a marries a woman heterozygous for blood type b. the chance that their first child will have type o blood is   a. 75% b. 50% c. 25% d. 0%

Hey there Ruth,

A man heterozygous for blood type A marries a woman heterozygous for blood type B. The chance that their first child will have type O blood is  Your correct answer would actually be . But by converted it into a percentage, your answer would be 25.  and  will both equal . So this would conclude to be that AO = () ; BO = .

To clarify your answer, your correct answer is 

Hope this helps.