Question

What are the possible blood types among the children of parents that are IAIB and ii? A. types A and B B. types A, B, and AB C. types A, B, and O D. types A, B, AB, and O

Answer 1

Answer:

The correct answer would be A. types A and B.

In ABO blood group, blood group is determined by three alleles $I^{A},$$I^{B},$ and $i$.

$I^{A}$ and $I^{B}$ are codominant to each other whereas $i$ is recessive to the other two.

The genotype of one parent is $I^{A}I^{B}$. So, two types of gametes would be produced $I^{A}$ and $I^{B}$

The genotype of second parent is $ii$. So, the gamete produced would be $i$.

The cross would result in the production of offspring with genotype $I^{A}i$ and $I^{B}i$.

Thus, the phenotype of the offspring would be blood group A and B.

Answer 2

Types a and b b. iaib