question_answer

A child with mother of A blood group and father of AB blood group, will not have the following blood group :

A)  B             

B)  A

C)  AB             

D)  0

Correct Answer: D

Solution :

In human beings four type of blood groups are present according to Landsteiner and Decastello. These are blood group A, B, AB and O. The blood group A has genotype \[{{I}^{a}}\] or \[{{I}^{a}}{{I}^{o}}\] Blood group B has genotype \[{{I}^{b}}{{I}^{b}}\] or \[{{I}^{b}}{{I}^{o}}\] Blood group AB has genotype \[{{I}^{a}}{{I}^{b}}\] Blood group O has genotype \[{{I}^{o}}{{I}^{o}}\] Hence, the child will not have 0 blood group.