Recent epidemiological and physiological evidence suggests to us that the worldwide pattern of human skin color is the product of natural selection acting to regulate the effects of the sun's ultraviolet (UV) radiation on key nutrients crucial to reproduc
Recent epidemiological and physiological evidence suggests to us that the worldwide pattern of human skin color is the product of natural selection acting to regulate the effects of the sun's ultraviolet (UV) radiation on key nutrients crucial to reproduc
最新的流行病学与生理学证据，令我们想到：人类肤色的全球分布模式是天择的产物，因为阳光中的紫外线辐射会影响某些营养素，而那些营养素是生殖成就的关键。