基因组的hypolimnas misippus支持一个共同的起源的W染色体在白类

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Updated: Jun 9, 2025

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Anna Orteu^1,2, Shane A McCarthy^2,3, Emily A Hornett^4,5,6

¹Department of Zoology, University of Cambridge, Cambridge, UK.

Genome biology and evolution

|October 30, 2024

概括

蝶和蝶W染色体的起源仍然不清楚. 这项研究表明,Lepidoptera中的W染色体可能具有共同的进化起源,可能来自B染色体,尽管与正规模型有所不同.

科学领域:

* 遗传学在遗传学方面
* 进化生物学进化生物学
* 昆虫学昆虫学

背景情况:

* 类动物 (和蝶) 具有ZW/ZZ性别确定系统.
* W染色体在Lepidoptera的进化起源是有争议的,其中包括自体源或B染色体起源的假设.
*快速的W染色体进化使理解其起源变得复杂.

研究的目的:

* 为了研究类动物中W染色体的进化起源.
*分析两个Hypolimnas物种的染色体级基因组组合.
* 为了比较不同Lepidopteran血统的W染色体进化.

主要方法:

*为Hypolimnas misippus和Hypolimnas bolina生成高质量的染色体级基因组组件.
*比较基因组分析使用来自相关物种的组装W染色体.
*合成分析以推断同源性和进化关系.

主要成果:

* H. misippus 的 W 染色体与 Z 染色体具有较高的相似性,这表明其潜在的自身染色体起源.
*对其他物种的分析提供了相反的证据,支持W染色体的B染色体起源.
*合成分析表明,类动物中W染色体具有共同的进化起源.

结论:

* 类动物中的W染色体可能具有共同的进化起源.
* 有证据表明,B染色体起源可能比正规的自身染色体起源模型更合理.
* 需要进一步的研究才能充分阐明类动物中W染色体的复杂演变.

关键词:

在B染色体中,B染色体是基因组组装组合的基因组.新-Z染色体新-Z染色体性染色体的演变性染色体的演变.

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