Question
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
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 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
the interaction of human populations with predators in colder climates
Responses
the clothing worn by humans in the early 8th century
the clothing worn by humans in the early 8th century
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 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
the interaction of human populations with predators in colder climates
Answers
GPT-4o mini
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 is because lighter skin pigmentation allows for more effective synthesis of Vitamin D in conditions of lower UV radiation, which was crucial as human populations migrated to colder climates with reduced sunlight.
**the impact of UV radiation on folate and Vitamin D levels in human populations.**
This is because lighter skin pigmentation allows for more effective synthesis of Vitamin D in conditions of lower UV radiation, which was crucial as human populations migrated to colder climates with reduced sunlight.