If a child is of O blood group and his father is of B blood group, the genotype of father is
IO IO
IA IB
IO IB
IO IA
C.
IO IB
The genotype of a person with blood group 'B' may be IBIB or IO1B, person with genotype IBIB cannot produce offsprings with blood group 'O' in any case but if the person's genotype is IO1B, then its offsprings may have blood group O.