Evolution of sexual development and sexual dimorphism in insects.

Evolution of sexual development and sexual dimorphism in insects.
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DOI:
10.1016/j.gde.2021.02.011
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发表时间:
2021-08
影响因子:
4
通讯作者:
Kopp A
Kopp A
中科院分区:
生物学2区
文献类型:
--
作者:
Hopkins BR;Kopp A

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大多数动物都有两种不同的性别。在形态、生理和行为水平上,雄性和雌性之间的差异是巨大的,但在基因组水平上,它们往往是轻微的或不存在的。这种脱节被克服,因为简单的遗传差异或环境信号能够指导共享基因组的性别特异性表达。关于这一过程如何在昆虫中起作用的一幅典型图片出现在数十年来对果蝇的研究中。但近年来,针对各种昆虫的分子遗传和发育研究激增。将这些研究结合起来,我们从比较的角度描述了性二态性的进化,并认为昆虫性别决定和分化系统是快速进化和高度保守的成分的组合。
Most animal species consist of two distinct sexes. At the morphological, physiological, and behavioural levels the differences between males and females are numerous and dramatic, yet at the genomic level they are often slight or absent. This disconnect is overcome because simple genetic differences or environmental signals are able to direct the sex-specific expression of a shared genome. A canonical picture of how this process works in insects emerged from decades of work on Drosophila. But recent years have seen an explosion of molecular-genetic and developmental work on a broad range of insects. Drawing these studies together, we describe the evolution of sexual dimorphism from a comparative perspective and argue that insect sex determination and differentiation systems are composites of rapidly evolving and highly conserved elements.
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