We tend to assume that all characteristics of plants and animals are adaptations that have arisen through natural selection.

我们倾向于假设动植物的所有特征都是自然选择的结果。

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Mimicry arises as the result of evolution through natural selection and the occurrence of random genetic mutations that lead over many generations to the appearance of favorable characteristics.

拟态是无数代自然选择和遗传变异的进化而获得的有利特征的结果。

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Through natural selection over thousands of years, these characteristics continue to the present day.

经过数千年的物竞天择，这些特征延续至今。

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Sexual selection emphasises the development of characteristics that demonstrate in a way that cannot be faked just how fit that characteristic's possessor is to father (or mother) another individual's offspring.

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The selection process puts socially defined characteristics, such as the outsized reputation of an executive like Mr Dimon, ahead of relevant practical skills and experience (Mr Dimon had little knowledge of retail banking or credit-card operations, two of Bank One's biggest and, in the second case, most problematic businesses).

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Although stock or index selection is generally based on volatility characteristics and the size of specific equities, low volatility ETFs, de facto have sector concentrations investors should keep in mind when they are making their selections.

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