Question

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

(i) Work out all the possible phenotypes and genotypes of the progeny.
(ii) Discuss the kind of dominance in the parents and the progeny in this case.

Answer 1

(A) The possible blood groups in offsprings are A and B.

(B)In codominance, both alleles of a pair express themselves fully in $F_1$ hybrid. It is contrary to the situation seen in incomplete dominance, where traits express themselves only partially. This is the example of partial dominance or complete dominance.