Question

What is the source of variation in human skin color?

• A. Changes in environment throughout history.
• B. Genetic drift occurring during bottleneck events.
• C. Human migrations to different environments.
• D. Mutations to the genes that code for the proteins determining skin color.

Answer 1

The correct option is C Human migrations to different environments.

As humans migrated to different environments they were exposed to different intensities of UV radiations. This in turn affected the amount of melanin production. In tropical regions since the exposure to UV radiations is high skin is darker and produces more melanin. However, the amount of melanin produced is not limited to latitudes where the human dwell but also the diet and period of exposure to light

So, the correct answer is 'Human migrations to different environments'