偶然变异
ǒu rán biàn yì
- accidental variation;accident variation
偶然变异-
科学家们曾经以为，这些喙在形状、高度、宽度和强度上的明显的变化，可能需要很多种不同基因经过很多偶然变异的慢慢积累。
Scientists had assumed that the dramatic alterations in beak shape , height , width and strength would require the accumulation of many chance mutations in many different genes .
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说到嗅觉，各人大不相同，主要是由于嗅觉感受器的基因代码偶然发生变异，而不是由于适应。
People vary greatly when it comes to smell , largely due to chance mutations in the genes that code for the smell receptors rather than for adaptive reasons .
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偶然律可以使变异修辞从一个起点出发产生出无数个无法预测的偶然结果。
Law of accident makes the activities of potential consciousness generate numerous accidental outcomes from the same starting point , and the outcomes are unpredictable .