Question

In humans blood type is determined by the A B, and O alleles. The A and B alleles are codominant to each other and dominant over the O allele. An individual with the AO genotype and an individual with the BO genotype can produce offspring with which of the following phenotypes?
A. O only
B.A or B only
C A, B, or O only
D.A, B, AB, оr O​

Answer 1

Answer:

d. A, B, AB, or O

Explanation:

The parent genotypes are AO and BO. Make a punnett square to see the genotypes of the offspring. I tried to make an example one below, but I suggest you draw one out for yourself.

          A                  O

B       AB                BO

O      AO                OO

The four genotypes would be AB, BO, AO, and OO. Because A and B are dominant over the O allele, the phenotypes would just simply AB, B, A, and O.