Question

In the article, "The Biology of Skin Colour," what correlation is reported to have been found between untraviolent light and skin colour?

a) the storng the ultraviolet light, the lighter the skin colour
b) the weaker the ultraviolet light, the lighter the skin colour
c) the weaker the ultraviolet light, the darker the skin colour
d) there was no correlation found

Answer 1

The correlation found between ultraviolet light and skin color is the weaker the ultraviolet light, the lighter the skin color.

Step-by-step explanation:

In the article "The Biology of Skin Colour," the reported correlation found between ultraviolet light and skin color is b) the weaker the ultraviolet light, the lighter the skin color. It has been suggested that in areas where sunlight is relatively weak, a lighter skin color is advantageous because it allows for the formation of vitamin D below the skin. On the other hand, in tropical areas where sunlight is strong, a darker skin color protects against excessive amounts of vitamin D. This correlation is an evolutionary adaptation to different levels of ultraviolet rays exposure from the sun.