question_answer

If a child is of O blood group and his father is of B blood group, the genotype of father is

A)                  \[I{}^\circ I{}^\circ \]                                     

B)                  \[{{I}^{A}}{{I}^{B}}\]

C)                  \[I{}^\circ \text{ }{{I}^{B}}\]                                                  

D)                  \[I{}^\circ {{I}^{A}}\]

Correct Answer: C

Solution :

                Genotype of a person with blood group B may be \[{{I}^{B}}{{I}^{B}}or\text{ }{{I}^{B}}{{I}^{o}},\] person with genotype \[{{I}^{B}}{{I}^{B}}\] can not produce offsprings with blood group O in any case but if the persons genotype is \[{{I}^{o}}{{I}^{B}}\] then its offsprings may have blood group O. eg.