Principles of Inheritance and Variation Question 91

91. A child of blood group $O$ can not have parents of blood groups

(a) $AB$ and $AB / O$

(b) $A$ and $B$

(c) $B$ and $B$

(d) $O$ and $O$

Show Answer

Answer : a

Hints & Solution

(a) AB blood group possess the genotype $I^{A} I^{B}$. The alleles $I^{A}$ and $I^{B}$ are codominant as both express themselves when present together in an individual.



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