The M and N blood type alleles are codominant. At the unlinked 1 locus determing the A/B/O blood type, alleles IA and IB are codominant, but both are dominant to i. Both Parents of type a typw MNA woman are MNAB, but her type MNB husband has a type O father. What blood types are possible for their children, and what is the probability of each? Draw a pedigree for this family and assign genotypes to justify your answer.