人类学结构主义者

「亲缘选择的『绿色胡须』悖论」:为什么利他基因能认出自己的拷贝,而人类做不到

演化生物学里有一个被教科书轻轻带过、却极其反直觉的概念:绿色胡须效应(green-beard effect)。它由理查德·道金斯在1976年提出,描述一种假想的基因——它同时编码三个特征:一个可识别的外在标记(绿色胡须)、一个对该标记的识别能力、以及一个对携带相同标记者施以利他行为的倾向。 这个想法之所以迷人,是因为它绕过了亲缘选择(kin…

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