Answer:
There is no chance that Rey —who has a normal vision man— and Cindy, who is a woman colorblind carrier, will have a colorblind daughter.
Explanation:
If a man with normal vision and women who is a carrier of colorblindness has a daughter there is a 50/50 chance of having a colorblindness carrier daughter. And all daughters would have normal vision.
Color blindness is a visual condition characterized by the inability to discern some colors, and has a recessive inheritance pattern linked to the X sex chromosome. This means that all males with the defective gene (Xd) would be color blind, while a female to be color blind must have both X chromosomes affected.
In the case of Rey and Cindy
♂ XY
♀XdX
Alleles X Y
Xd XdX XdY
X XX XY
Of the daughters they have, half could be carriers, while the other half would not have the altered gene. In any case, none of their daughters could be colorblind.
