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.Which of the following is a possible partial genotype for the mother?

Question

Quizplus · Accepted Answer

Based on the information given, the mother must carry at least one A allele (since her daughter is type O) and at least one B allele (since her son is type B). She is also Rh positive, which means she must have at least one R allele. Therefore, the possible partial genotype for the mother is I^Ai. Option A is incorrect because it only includes the A allele, but not the B allele. Option B is incorrect because it only includes the B allele, but not the A allele. Option C is incorrect because it suggests that the mother does not have any A or B alleles, which is not possible given her children's blood types.

A Woman Who Has Blood Type a Positive Has a Daughter