A woman with two genes, one for haemophilia and one for colour blindness on one of its X-chromosomes, marries a normal man. The progeny will be

Options

A. All sons haemophilic and colour blind
B. 50% haemophilic and colour blind sons and 50% normal sons
C. All daughters haemophilic and colour blind
D. 50% haemophilic daughters and 50% colour blind daughters

Answer

B

Explanation