Multiple choice In which of the following cases is all 4 blood groups possible for the offsprings? Heterozygous A and heterozygous B Homozygous A and heterozygous B Heterozygous A and homozygous B Homozygous A and O Homozygous B and O Reveal answer Fill a bubble to check yourself A Correct answer Explanation This is the correct answer. The explanation for it is as follows: Parents : IAi x IBi Gametes: IA i x IB i Offsprings: IAIB, IAi, IBi, ii