Optix和cortex/ivory/mir-193再次:重复使用两个模仿热点位置
Anna Orteu1,2, Emily A Hornett3,4,5, Louise A Reynolds3
1Tree of Life Programme, Wellcome Sanger Institute, Hinxton, UK.
Proceedings. Biological sciences
|July 24, 2024
概括
进化适应是可重复的,正如两种蝶物种的融合模仿所示. 基因分析揭示了热点位置控制翅膀模式附近的明显的非编码区域,突出了适应性进化中重复的基因重用.
科学领域:
- 进化生物学是进化的生物学.
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
背景情况:
- 进化重复性是有争议的,但对类似功能的基因再利用是有记录的.
- 蝶的翅膀模式提供了"热点位置"的例子,可以控制物种之间的特征.
研究的目的:
- 为了研究贝特斯翅膀模仿融合在两个*Hypolimnas*蝶物种的分子遗传基础.
- 识别基因位置及其对仿真模式负责的变异.
主要方法:
- 在Hypolimnas misippus和Hypolimnas bolina中剖析模仿的遗传结构.
- 分析在 *皮质/象牙/米尔-193* 热点位置和 *optix* 基因附近的变异.
主要成果:
- 两种物种的模仿是由 *cortex/ivory/mir-193* 热点位置附近的变化控制的.
- 不同的非编码区域独立进化以控制白色前翼和后翼模式.
- *H. bolina*的色与 *optix* 基因有关.
- 在 *cortex/ivory/mir-193* 位置没有发现结构变异.
结论:
- 在 *Hypolimnas* 蝶中,贝蒂斯模仿的融合进化是由热点位置附近的变化驱动的.
- 不同的非编码区域的独立进化突显了适应性遗传变化的可重复性.
- 像 *cortex/ivory/mir-193* 和 *optix* 这样的热点位置对蝶的翅膀模式进化至关重要.
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