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一个共享的基因,但不同的动态调节模仿多形态在密切相关的蝶物种的模仿多形态

Sofia I Sheikh¹, Meredith M Doellman¹, Nicholas W VanKuren¹

¹Department of Ecology & Evolution, The University of Chicago, Chicago 60637, IL, USA.

Proceedings. Biological sciences

|November 25, 2025

概括

双性 (dsx) 基因控制雌性蝶的颜色模式,影响性二重形和模仿性. 尽管共享DSX使用,但不同的下游基因表达是Papilio物种模仿进化的基础.

科学领域:

进化遗传学的进化遗传学
发育生物学是发展生物学.
动物颜色动物的颜色.

背景情况:

性限制的多态性是常见的和适应性的,但它们的遗传基础是不太了解的.
在Papilio蝶中,女性限定的色彩模式多态性是由双性 (dsx) 基因控制的.

研究的目的:

为了研究 Papilio 蝶中性别限制的翅膀模式多态性的分子和发育基础.
确定双性 (dsx) 在控制性变态和模仿性方面的作用.
为了比较Papilio物种中模仿进化的下游遗传机制.

主要方法:

基因淘汰实验以评估DSX功能.
RNA测序 (RNA-seq) 用于比较形态和物种之间的基因表达.
对dsx等位基因的时空表达模式的分析.

主要成果:

在雌性蝶中击落dsx导致了类似雄性的颜色模式,证实了dsx在两性二态和多态性质中的作用.
模仿的dsx基因表现出Papilio lowii和Papilio alphenor中独特的时空表达模式.
虽然一些翅膀模式基因的表达方式不同,但它们的时间模式在物种之间有很大差异,这表明不同的下游调节机制.

结论:

双性 (dsx) 基因是Papilio蝶中女性限定色彩模式多态和性二态的关键调节者.
尽管DSX的作用被保留,但模仿的进化涉及不同的物种不同的下游遗传路径.
这突显了表型新的演变背后的多样化分子机制.

关键词:

这就是德沃.基因合作选择是基因的选择.基因表达的基因表达方式性别有限的多态性.这是一个超级基因.

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