A man with genotype IᴬIᴮ has which blood group?
Answer and explanation
Correct answer: C. Blood group AB
- Step 1: Alleles Iᴬ and Iᴮ are codominant, so both are expressed.
Answer
Blood group AB.
Why not the others: Blood group A only: the two alleles are codominant, so neither masks the other. Blood group B only: the two alleles are codominant, so neither masks the other. Blood group O: type O requires two i alleles; both Iᴬ and Iᴮ are expressed.
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