Question

Susheel, a colourblind man, is married to Susheela, a woman with normal vision. Which of the following combinations would be possible in their children?

Options

• Colourblind daughters and colourblind sons.

• Normal daughters and normal sons.

• Carrier daughters and normal sons.

• Carrier daughters and colourblind sons.

Answer 1

Carrier daughters and normal sons.

Explanation:

Susheel (colourblind) possesses the genotype X^cY, whereas Susheela (normal vision) is a carrier with the genotype XX. Their boys will inherit a normal X from Susheela and a Y from Susheel, resulting in normal vision. Their daughters will receive Susheel’s X^c and Susheela’s regular X, making them carriers.