How have the historic levels of melanin in human populations changed due to migration? (1 point)
Responses
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.
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 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 less melanin became more common as populations migrated toward the equator.
1 answer
The correct response is:
Humans that produced less melanin became more common as populations migrated away from the equator.
This is because, in regions with less sunlight (further away from the equator), there was less selective pressure for high melanin production, which protects against UV radiation. As populations migrated to these areas, individuals with lighter skin (less melanin) became more prevalent.
