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

ABO blood group is controlled by gene I and its types are IA, IB and IO.

As mother is A and the father is B, the possible genotypes for parents are - Mother -${\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{A}}/{\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{O}}$and Father -${\mathrm{I}}^{\mathrm{B}}{\mathrm{I}}^{\mathrm{B}}/{\mathrm{I}}^{\mathrm{B}}{\mathrm{I}}^{\mathrm{O}}$.

Therefore, the child's blood group genotype possibilities are -

${\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{A}}/{\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{O}}-\mathrm{A}$

${\mathrm{I}}^{\mathrm{B}}{\mathrm{I}}^{\mathrm{O}}/{\mathrm{I}}^{\mathrm{B}}{\mathrm{I}}^{\mathrm{O}}-\mathrm{B}$

${\mathrm{I}}^{\mathrm{o}}{\mathrm{I}}^{\mathrm{O}}-\mathrm{O}$

${\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{B}}-\mathrm{A}\mathrm{B}$