For Darwin, the only thing that organisms contribute to determining how next-generation phenotypes differ from parent-generation phenotypes is random variation.

对达尔文来说，造成子代表型和父代表型存在差异的因素中，生物自身所起的唯一作用就是随机突变。

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For Darwin, the only thing that organisms contribute to determining how next-generation phenotypes differ from parent-generation phenotypes is random variation.

对达尔文来说，造成子代表型和父代表型存在差异的因素中，生物自身所起的唯一作用就是随机突变。

youdao