Red-green colour blindness is a sex-linked characteristic caused by a recessive allele. What prediction can be made about the offspring of a colour-blind woman and a man with normal vision?
- ABoys will be colour-blind, and girls will have a $50\%$ chance of being colour-blind.
- BBoys will be colour-blind, and girls will have normal vision.
- CGirls will be colour-blind, and boys will have a $50\%$ chance of being colour-blind.
- DGirls will be colour-blind, and boys will have normal vision.