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A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh positive is a trait that shows simple dominance over Rh negative and is designated by the alleles R and r, respectively. A third gene for the MN blood group has codominant alleles M and N.
43) Which of the following is a possible partial genotype for the son? A) IBIB B) IBIA C) ii
D) IBi E) IAIA