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Evolutionary biologist explains rarity of natural blonde hair

Natural blonde hair is a rare trait found in approximately 2% of adults globally. Evolutionary biologists explain this phenomenon through a combination of factors including sunlight exposure, genetic predispositions, and the tendency for hair color to darken with age. Interestingly, the trait of blondness has evolved independently in at least two distinct human populations. AI

RANK_REASON The item is an explanation from an expert on a biological phenomenon, not a new release or significant industry event.

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Evolutionary biologist explains rarity of natural blonde hair

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  1. Forbes — Innovation TIER_1 English(EN) · Scott Travers, Contributor ·

    Only About 2% Of Adults Are Natural Blondes — An Evolutionary Biologist Explains Why

    Natural blond hair is rare worldwide. Here's how sunlight, genetics and childhood darkening explain it, and why blondness evolved twice in different populations.