Colour blindness is a sex-linked characteristic. Which of the following statements about colour blindness is correct?
- AThe gene for colour blindness is located on the Y chromosome and colour blindness is more common in males than in females.
- BThe gene for colour blindness is located on the X chromosome and colour blindness is more common in males than in females.
- CThe gene for colour blindness is located on the X chromosome and colour blindness is more common in females than in males.
- DThe gene for colour blindness is located on the Y chromosome and colour blindness is more common in females than in males.