alleryA person with blood group AB has genotype
AI^A i
Bi i
CI^A I^B
DI^B I^B
Answer & Solution
Correct answer: C. I^A I^B
AB blood arises when both I^A and I^B alleles are expressed together (co-dominance).
The two alleles produce A and B sugars side by side on the red cell surface.
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