question_answer

A normal woman whose father was colurblind, 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 \[=X{{X}^{h}}\] The genotype of normal man = XY (Normal woman) x (Normal man) \[\therefore \] 50% of the sons would be colourblind.