From a mating between AO and BO individuals, which blood type is not a possible outcome for their offspring?

In a mating scenario between individuals with genotypes AO and BO, the potential blood types of their offspring can be determined by analyzing the possible combinations of alleles they can inherit.

The AO individual can pass on either the A allele or the O allele, while the BO individual can pass on either the B allele or the O allele. This results in the following combinations:

• If the AO parent passes on A and the BO parent passes on B, the offspring will have blood type AB.

• If the AO parent passes on A and the BO parent passes on O, the offspring will have blood type A.

• If the AO parent passes on O and the BO parent passes on B, the offspring will have blood type B.

• If the AO parent passes on O and the BO parent passes on O, the offspring will have blood type O.

Given these combinations, the possible blood types for their offspring are AB, A, B, and O. Therefore, every blood type listed in the options can indeed be produced from the mating of AO and BO individuals, making it clear that all proposed blood types are possible outcomes.

This analysis confirms that the answer indicating all blood types are possible is accurate, demonstrating the inheritance patterns of the ABO blood group system