How is it possible for a child to have blood group O if the parents have blood group A and B?

Write a note on ABO blood group.

Why is human ABO blood group considered a good group iin humans?

A man with blood group A marries a woman with blood group B. They have a son with blood group AB and a daughter with blood group O. Work out a cross and show the possibility of such an inheritance. As the son has blood group AB and the daughter has blood group O the possible genotype of the father is IA i and of the mother is IB i.

A child has blood group O. If the father has blood group A and mother blood group B, work out the genotypes of the parents and the possible genotypes of the other offsprings.

A woman with blood group O marries a man with blood group AB. Show the possible blood groups of the progeny. List the alleles involved in this inheritance.

Name genetically determined blood group baside A B O blood group.

Who discovered A B blood group?