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They didn’t lose it. Lighter tones were more popular with potential mates and resulted in gradual whitening over time.
by xwdv 5y ago
They didn’t lose it. Lighter tones were more popular with potential mates and resulted in gradual whitening over time.
- wizzwizz4 5y agoRunaway sexual selection effects generally don't result in beneficial traits; reduced melanin is beneficial in less sunny climates, because cholecalciferol (so-called “Vitamin D₃”, even though it's not a vitamin) synthesis requires sun exposure. And yes, having less of something is correctly called “losing” it in the English language. That was not a correction.