Color blindness is caused by
A)changes in the optic nerve.
B)changes in the genes which control the pigments in the rods.
C)changes in the genes which control the pigments in the cones.
D)recessive genes on the Y chromosome.

Question

Quizplus · Accepted Answer

Color blindness is caused by changes in the genes which control the pigments in the cones. The cones are specialized cells in the retina of the eye that are responsible for detecting color. There are three types of cones, each of which is sensitive to a different range of wavelengths of light, corresponding to the colors blue, green, and red. In people with color blindness, one or more of these types of cones are deficient or absent, leading to difficulty distinguishing between certain colors. This deficiency is usually caused by genetic mutations that affect the production or function of the cone pigments.

Color Blindness Is Caused by