Answer:
50% chance of their son being colorblind
Explanation:
A Punett square for the man’s mom and dad shows that he definitely has colorblindness and his genotype is XcY
A Punnett square for the woman shows she is a carrier for colroblindness and her genotype is XcX
The chance of having a son is 50% and the chance of that son having colroblinness is 50%
D is the answer.
Formula A and B are written incorrectly.
Formula C has 4 carbons, 5 hydrogens and 3 oxygens.
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The genes appeared in a later generation, they were dormant.