An evolutionary biologist explains that male pattern baldness is a common phenomenon, affecting approximately half of men by age 50. This condition is influenced by a combination of dihydrotestosterone (DHT) and numerous genes. The biologist suggests that baldness might even serve as a social signal, though its precise evolutionary advantage remains a subject of discussion. AI
RANK_REASON The item is an explanation of a biological phenomenon by an expert, fitting the commentary bucket.
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