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Introduction. Extent processes and evolutionary impact of interspecific hybridization in animals

机译:介绍。动物种间杂交的程度过程和进化影响

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摘要

Since the time of Charles Darwin, studies of interspecific hybridization have been a major focus for evolutionary biologists. Although this phenomenon has often been viewed as problematic in the fields of ecology, taxonomy and systematics, it has become a primary source of data for studies on speciation and adaptation. Effects from genetic/evolutionary processes, such as recombination and natural selection, usually develop over extended periods of time; however, they are accelerated in cases of hybridization. Interspecific hybrids exhibit novel genomes that are exposed to natural selection, thus providing a key to unravel the ultimate causes of adaptation and speciation. Here we provide firstly a historic perspective of hybridization research, secondly a novel attempt to assess the extent of hybridization among animals and thirdly an overview of the reviews and case studies presented in this theme issue.
机译:自查尔斯·达尔文(Charles Darwin)时代以来,种间杂交的研究一直是进化生物学家关注的重点。尽管这种现象在生态学,分类学和系统学领域经常被认为是有问题的,但它已成为物种形成和适应研究的主要数据来源。遗传/进化过程的影响,例如重组和自然选择,通常会持续较长的时间;但是,在杂交的情况下它们会加速。种间杂种表现出暴露于自然选择的新基因组,从而提供了揭示适应和物种形成的最终原因的关键。在这里,我们首先提供杂交研究的历史观点,其次尝试评估动物之间杂交程度的新颖尝试,其次提供本主题中提出的评论和案例研究的概述。

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