question_answer

A normal woman whose father was colorblind, is married to a normal man. The sons would be:

A)  75% colourblind                              

B)  50% colourblind              

C)       all normal           

D)        all colourblind

Correct Answer: B

Solution :

The genotype of normal woman with colourblind father = XXh The genotype of normal man = XY Normal woman x Normal man \[\therefore \] 50% of the sons would be colourblind.