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

Responses

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

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

1 answer

The correct response is:

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

This is because populations in equatorial regions, where UV radiation from the sun is strongest, typically have higher levels of melanin as a protective adaptation against the harmful effects of UV radiation. Conversely, populations migrating away from the equator, where UV radiation is less intense, tend to have lower levels of melanin.