Question

For human blood type, the a and b alleles are codominant, while the o allele is recessive. if an ab mother had children with a b blood type father (genotype bo), what proportion of the children would express the b protein alone?

a. 3/4
b. 1/2
c. 0/4
d. 1/4

Answer 1

1/4 if by express you mean in the genotype
1/2 if by express you mean in the phenotype