First slide

Inheritance of One Gene

Question

In man, four phenotypes of blood groups are due to the presence of antigen 'A' and antigen 'B' on the surface of RBCs. The chromosome that has the gene to control these antigens is

Easy

A

X-chromosome
B

9^th chromosome
C

7^th chromosome
D

21^th chromosome

Solution

The chromosome that has the gene which controls the blood group types in humans is 9^th chromosome.

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