亲生繁殖和生殖补偿一起有利于致命的t-哈普类型
Manisha Munasinghe1, Yaniv Brandvain1,2
1Department of Plant and Microbial Biology, University of Minnesota, 140 Gortner Laboratory, 1479 Gortner Avenue, St. Paul, MN 55108, United States.
The Journal of heredity
|June 6, 2024
概括
在t-哈普类型中,传播扭曲会导致男性不育,但可以通过母亲的生殖补偿得到支持. 亲生繁殖显著提高了这些致命的t-haplotypes在自然种群中的入侵和固定.
科学领域:
- 遗传学 遗传学 是一个
- 进化生物学 进化生物学
- 人口遗传学 人口遗传学
背景情况:
- 小鼠中的T-哈普类型表现出介质驱动,扭曲了孟德尔遗传.
- 扭曲的t-哈普类型携带着偏向其传播给后代的等位基因,通常约为90%.
- 驱动t-haplotype等位基因的同卵性导致男性不育,防止固定.
研究的目的:
- 为了研究致命的t-haplotypes的进化动态.
- 确定亲生繁殖和生殖补偿在t-haplotype进化中的作用.
- 将理论模型与自然种群中致命的t-半型的观察频率相协调.
主要方法:
- 对t-haplotype传输动态的数学建模.
- 人口遗传学场景的模拟,包括内生 (兄弟姐妹交配).
- 在不同程度的生殖补偿和近亲繁殖下对等基因频率的分析.
主要成果:
- 低水平的近亲繁殖大大降低了致命的t-haplotype入侵所需的生殖补偿.
- 亲生繁殖促进了祖先的男性无菌t-haplotypes被致命的驱动器所取代.
- 结合亲生繁殖和生殖补偿,可以获得接近观察频率的理论平衡.
结论:
- 亲生繁殖是致命的t-haplotypes进化成功的关键因素.
- 亲生繁殖和孕产妇补偿之间的相互作用解释了致命驾驶者的普遍性.
- 这些机制为理解自然小鼠群体中的t-哈普类型进化提供了更现实的框架.
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