A man with A blood group marries a woman with B blood group and both show the presence of homozygous alleles. The possible genotypes of the offsprings would be

I. Type $A$
II. Type $B$
III. Type $O$
IV. Type $AB$

Q. Human blood type is determined by codominant alleles. There are three different alleles, known as $I^A$, $I^B$, and i. The $I^A$ and $I^B$ alleles are co-dominant, and the i allele is recessive.
The possible human phenotypes for blood group are type A, type B, type AB, and type O. Type A and B individuals can be either homozygous ($I^A{I}^A$ or $I^B{I}^B$, respectively), or heterozygous ($I^{A}i$ or $I^{B}i$, respectively).
A woman with type A blood and a man with type B blood could potentially have offspring with which of the following blood types?

Q. A man of blood group O marries a woman of blood group-$AB$, which type of progeny would indicate that man is homozygous ?

Q. A man with blood group A marries AB blood group woman. Which type of progeny indicate that the man is not homozygous?

Q. In the ABO blood groups inheritance, the A and B alleles are co-dominant, and O is recessive to both the A and B alleles. If a man with type B blood and a woman with type A blood marry, the phenotype of their children could be

Q. A woman with O blood group marries a man with AB blood group