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Large DNA study reveals natural selection led to more redheads and less male-pattern baldness

Over the past 10,000 years, evolution in West Eurasia has selected for light skin, red hair and resistance to HIV in humans, ...
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Natural selection in the wild / John A. Endler

Introduction. Definition of natural selection ; Relationship to genetic drift and evolution ; Restricted meanings of "natural selection" ; Modes of selection ; Summary -- Philosophical comments.