Question

A man have blood group a marries a woman which blood group is o. What will be the blood group of their child and how

Answer 1

the blood group of the child is a

Answer 2

Given information is not enough to tell us which characteristics are dominant –blood group A or O. Blood type A is always dominant in ABO blood and blood type O is always recessive. Here, the father’s blood group may be genotypically AA (homozygous) or AO (heterozygous), whereas that of mother can be OA or OO.