As Charles Darwin observed, natural selection operates whenever individuals of one genetic composition are better at reproducing than that of others.
that of others
the other
another
those of another
that of the next
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整句意思为:正如查尔斯·达尔文(Charles Darwin)所观察到的,只要具有一个遗传组成的个体比另一个具有更好的遗传能力,自然选择就会起作用
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