Which factors were determined to directly cause the loss of skin pigmentation in humans as a result of natural selection?(1 point)

Responses

the clothing worn by humans in the early 8th century
the clothing worn by humans in the early 8th century

the impact of UV radiation on folate and Vitamin D levels in human populations
the impact of UV radiation on folate and Vitamin D levels in human populations

a change in the diet of human populations as they settled in colder climates
a change in the diet of human populations as they settled in colder climates

the interaction of human populations with predators in colder climates

1 answer

The factor that was determined to directly cause the loss of skin pigmentation in humans as a result of natural selection is the impact of UV radiation on folate and Vitamin D levels in human populations. This relationship highlights how adaptation to different levels of ultraviolet radiation in various environments influenced skin pigmentation. In regions with high UV radiation, darker skin provides protection against folate degradation, while lighter skin in areas with lower UV radiation enhances the ability to produce Vitamin D.