Color blindness is due to a defect in

Color blindness:

1. It is a condition in which a person finds it hard to tell the difference between certain colors.
2. It is a genetic disease.
3. There is no known cure, but special glasses and contact lenses are used.
4. It is an X-linked recessive trait.

Reason:

1. Cone defects in the eye are the cause of color blindness.
2. The photoreceptor cells known as cones include the pigments porpyrosin, cyanopsin, and iodopsin.
3. These cells are linked to the eyes ability to see color in daylight.