A man whose father was colour blind marries a woman who had a colour blind mother and normal father. What percentage of male children of this couple would be colour blind?
A. 25%
B. 50%
C. 0%
D. 75%
Answer:C
A man whose father was colour blind marries a woman who had a colour blind mother and normal father. What percentage of male children of this couple would be colour blind?
A. 25% B. 50% C. 0% D. 75%