question_answer

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

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

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

C)  \[{{I}^{o}}\,{{I}^{B}}\]

D)  \[{{I}^{o}}\,{{I}^{A}}\]

Correct Answer: C

Solution :

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