Question

A man with blood group A marries a woman with blood group O. Is this information enough to tell you which traits is dominant? Why or why not?

Answer 1

yes this information is enough to determine the sex of the baby by drawing punnet square

Answer 2

Noo because the blood group of man is AO and the woman is OO so if A is the dominant from father blood group so child also gates blood group A so by this we do not tell the blood group of child on the basis of the information