random variation

基本解释

Additionally, since Raoult only askedabout very general, common symptoms, Garry believes that the resultsmight be within random variation.
此外，由于拉乌尔只向病人询问了非常普遍和常见的症状，加里认为这一结果可能是由随机的身体变化造成的。
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。
The consensus view among neo-Darwinians continues to be that evolution is random variation plus structured environmental filtering, but it seems the consensus may be shifting.
新达尔文主义的延伸观点认为，进化是随机突变伴随结构性的环境过滤，但看起来这些共识可能会改变。

Response rates were low, which increased random variation from one period to the next.
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The small effect was just a random variation, not due to the treatment.
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But natural selection requires random variation to generate the various properties.
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