How have the historic levels of melanin in human populations changed due to migration? (1 point)

Question

Responses

Humans that produced less melanin became more common as populations migrated away from the equator.

Humans that produced more melanin became more common as populations migrated toward the equator.

Humans that produced more melanin became more common as populations migrated away from the equator.

Humans that produced less melanin became more common as populations migrated toward the equator.

Answer 1

The correct response is:

Humans that produced less melanin became more common as populations migrated away from the equator.

This is because, as human populations migrated to regions with less sunlight, lower melanin levels became more advantageous for synthesizing vitamin D in lower UV conditions. Conversely, populations that migrated toward the equator tended to have higher levels of melanin to protect against the intense UV radiation.