-
A woman with two genes for haemophilia and a gene for colour blindness on one of the 'X' chromosomes marries a normal man. How will the progeny be
-
- haemophilic and colour-blind daughters
- 50% haemophilic colour-blind sons and 50% haemophilic sons
- 50% haemophilic daughters and 50% colour-blind daughters
- All sons and daughters haemophilic and colour-blind