What is a mutation? Any change in DNA that may or may not affect the protein produced, Any change in DNA that has positive effect on an organism, Any change in DNA that has a negative effect on an organism

Brian has a medical condition called cone dystrophy, which is a disorder of the cone cells in the eye. what symptoms would you expect brian to have? a. inability to see in the dark b. difficulty determining colors c. difficulty determining shapes and outlines d. inability to see in all light conditions