Biology · Human Genetics and Adaptations
Which specific biological factor exhibits evolutionary variation in humans to balance the requirement for ultraviolet (UV) radiation protection with the necessity for vitamin D synthesis?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Hemoglobin concentration
- 2Keratin production
- 3Melanin levels✓
- 4Collagen density
Correct answer
Melanin levels
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