A child has blood group 0. If the father has blood group A and mother has blood group B, work out the genotypes of the parents and the possible genotypes of the other offsprings.

The child with blood group 'O' will be homozygous recessive alleles. Therefore, both the parents should be heterozygous, i.e., the genotype of the father will be $I^{A}i$and of mother will be $I^{B}i$.

Blood group : AB

The possible blood groups of other offspring will be AB, A, B and O.