Youzhan 8, selected from a natural mutation of variety Aojinzhan by Rice Research Institute of GXAAS, is a fine grain quality inbred variety of indica type.

油占8号是广西农科院水稻所从“澳粳占”自然变异植株中选育而成的优质常规稻新品种。

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But the new evidence that humans have adapted rapidly and extensively suggests that natural selection must have other options for changing a trait besides waiting for the right mutation to show up.

但人类能够全面并且快速适应新环境，这个新发现的证据说明自然选择要想改变某一特征可能不必等待正确的变异发生，而是还有其它选择。

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Genetic algorithms mimic Darwinian natural selection, where "fitness" selects individuals for survival, breeding, and, hence, adaptive mutation.

遗传算法模仿达尔文的自然选择，其中“适应性”选择进行生存、繁殖以及由此而来的适应性变异的个体。

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He specifically questions whether complex systems could have evolved gradually through natural selection and random mutation.

MSN: Intelligent design vs. stack of science books

"I am quite skeptical that they present detailed, rigorous models of the evolution of the immune system through random mutation and natural selection, " he said.

MSN: Intelligent design vs. stack of science books

The mutation is a natural occurrence, as is the reaction to the drug.

ECONOMIST: America��s Supreme Court wallops the biotech industry