Only the individuals of a species are subject to the pressures of natural selection.

只有一个物种的个体感受到自然选择的压力。

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It is likely that the genes involved, which include genes that encode neuronal ion channels, have been subject to a positive selection pressure leading to an accelerated evolution of genetic changes.

与之其进化相关的基因，包括编码的神经离子通道的基因，可能受到了积极的选择压力，从而加速了基因变化的转变。

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Its coverage of the subject is impressive and provides a good selection of standard exercises.

他对课题的覆盖度是惊人的，而且他提供了一些精选的经典的习题。

youdao

Cricket gives them the opportunity to watch world-class sportsmen, and the game is now well enough entrenched to have become the subject of bitter wrangles over team selection, and the skills of the coach, the former West Indian batsman, Gordon Greenidge (who was granted Bangladeshi citizenship after the national team qualified for the World Cup).

ECONOMIST: Meet the minnows

The explanations, particularly in the thorny field of quantum physics, are excellent, and the selection of subject matter skilfully winnows a vast field.

ECONOMIST: History of science: Time's arrow | The

What they have found is that about 1, 800 protein-coding genes, some 7% of the total known, show signs of having been subject to recent natural selection.

ECONOMIST: Human evolution