Final answer:
Melanin production affects skin color by either increasing or decreasing pigmentation, with eumelanin leading to darker skin and pheomelanin resulting in lighter skin.
Explanation:
Melanin production affects skin color by:
- Increasing pigmentation: Eumelanin and pheomelanin are two forms of melanin produced by melanocytes. Eumelanin leads to darker skin color.
- Decreasing pigmentation: Pheomelanin production results in lighter skin color, making it less pigmented.
- Changing skin thickness: Melanin production does not directly affect skin thickness.
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