Zoology - Principles of Inheritance and Variation Question with Solution | TestHub

According to the ABO system, the commonest blood group is the human population is O while the rarest blood group is AB. ABO blood group is controlled by gene I and its types are${\mathrm{I}}^{\mathrm{A}},\mathrm{ }{\mathrm{I}}^{\mathrm{B,}}$and${\mathrm{I}}^{\mathrm{O}}$.

Wife has AB blood group, so her genotype is${\mathrm{I}}^{\mathrm{A}}\mathrm{ }{\mathrm{I}}^{\mathrm{B}}$

Husband has O blood group, so his genotype is${\mathrm{I}}^{\mathrm{O}} {\mathrm{I}}^{\mathrm{O}}$

Thus their children could have either${\mathrm{I}}^{\mathrm{A}}\mathrm{ }{\mathrm{I}}^{\mathrm{O}}$(A blood group) or${\mathrm{I}}^{\mathrm{B}}\mathrm{ }{\mathrm{I}}^{\mathrm{O}}$(B blood group)