genetic evolution too may proceed as a series of brief spurts betweenstable plateaux.
genetic evolution too may proceed as a series of brief spurts between stable plateaux.
Explanation in English:
The excerpt discusses a concept in evolutionary biology, specifically relating to how genetic evolution occurs over time. It suggests that the process of evolution is not always gradual and continuous; instead, it can happen in a way that involves rapid changes followed by periods of stability.
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Genetic Evolution: This refers to changes in the genetic composition of populations over time, leading to the development of new species or modifications of existing species.
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Brief Spurts: This indicates that evolution can occur in quick bursts where significant changes take place in a relative short period. For example, a sudden mutation might lead to a new trait being advantageous, resulting in a rapid change in the population’s genetic makeup.
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Stable Plateaux: After these rapid changes, evolution may settle into a phase where the species undergo little or no change for an extended duration. During these plateaus, populations may adapt to their environments in stable ways, leading to a form of equilibrium where the characteristics of the species remain constant.
In summary, the excerpt suggests that the process of genetic evolution can involve sudden and rapid changes (spurts) interspersed with longer periods of relative stability (plateaux), rather than being a smooth and continuous process.
Explanation in Chinese (中文解释):
这段摘录讨论了一个关于进化生物学的概念,特别是关于遗传进化如何随时间发生的。它建议进化过程并非总是平缓和连续的;相反,它可能以一种方式发生,涉及快速变化和随后的稳定时期。
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遗传进化:这指的是种群基因组成随时间的变化,导致新物种的发展或现有物种的改变。
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短暂的突变:这意味着进化可以在相对较短的时间内发生快速的变化,其中显著的变革可能会发生。例如,一个突变可能导致一个新特征在特定环境中变得有利,从而导致种群基因构成的快速变化。
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稳定的高原:在这些快速变化之后,进化可能会进入一个阶段,在这个阶段,物种的性质在较长时间内几乎没有变化。在这些高原时期,种群可能会以稳定的方式适应它们的环境,导致一种均衡状态,其中物种特征保持不变。
综上所述,这段摘录表明,遗传进化的过程可能涉及突发的快速变化(突变),与较长时间的相对稳定期(高原)交替出现,而不是一个平滑和连续的过程。