Which statement describes the blood type of a person with the alleles iai?

it is type ab because i and i are codominant.
it is type ab because a and i are codominant.
it is type a because i is dominant and a is recessive.
it is type a because a is dominant and i is recessive.
don't copy and paste, make sure your answer contains an answer, and need this with the hour.

D is correct option: It is type A because A is dominant and i is recessive.

Explanation:

According to the ABO blood group system, there are three types of alleles defining blood type. These are IA, IB, and i. The IA and IB are dominant alleles and will mask the effect of i allele. So, if we define the genotype according the condition given in question, the individual having IAi will have A blood type.

On the other hand, IBi will have B blood type. And in case both alleles are present (IAi and IBi), it will reflect the codominance of both alleles thus making blood type AB.

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