In normal woman, whose father was colour blind is married to a normal man. The sons would be
A. all colour-blind
B. 75% colour-blind
C. 50% colour-blind
D. all normal
Answer:C
In normal woman, whose father was colour blind is married to a normal man. The sons would be
A. all colour-blind B. 75% colour-blind C. 50% colour-blind D. all normal