PATHOLOGY MCQ
SKIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What selective advantage did people have to increase melanin production?
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Increased protection from skin cancer
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Increased protection from folate destruction
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Increased synthesis of vitamin D
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All of the above
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Explanation:
Detailed explanation-1: -The greater amount of eumelanin in darker skin protects folate from being broken down by UV radiation and thus increases fitness among populations in high-intensity UV areas.
Detailed explanation-2: -How does melanin protect the skin? When you spend time out in the sun, your body produces more melanin. The substance absorbs light from UV rays and redistributes it toward the upper layers of skin. It also protects the genetic material stored in your cells by keeping out harmful UV rays.
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