Question

When you are exposed to sunlight for a long time, your skin, which otherwise appears normal, gets heavily tanned. What could be the reason?

A. The genes for melanin pigmentation remain turned on and prepare more melanin than usual to protect the skin from photo-damage when it is exposed to sunlight for long time.
B. The genes for melanin pigmentation remain turned off and synthesize more melanin than usual to protect the skin from photo-damage when it exposed to sunlight for a long time.
C. The genes for melanin pigmentation are switched off to stop the synthesis of mel

Answer 1

The answer is A.

Within the skin's epidermal outer layer are cells that contain the pigment melanin. Melanin protects skin from the sun's ultraviolet rays, which can burn the skin, and over time can cause a person to age prematurely. Tanning occurs because exposure to sunlight causes the skin to produce more melanin and to darken. The tan fades as these cells move toward the surface and are sloughed off.

Answer 2

"The genes for melanin pigmentation remain turned on and prepare more melanin than usual to protect the skin from photo-damage when it is exposed to sunlight for long time" is the actual reason. The correct option among all the options that are given in the question is the first option or option "A".