...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Genetica >Rapid response to perturbation of chromosome frequencies in natural populations of Drosophila robusta
【24h】

Rapid response to perturbation of chromosome frequencies in natural populations of Drosophila robusta

机译：对果蝇自然种群中染色体频率扰动的快速响应

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Perturbation of gene or chromosome frequencies in natural populations is one of the most powerful ways of demonstrating whether natural selection maintains genetic polymorphism or if other evolutionary forces are at work. Gene arrangement frequencies in two natural populations of Drosophila robusta were perturbed multiple times by releasing adult flies with contrasting karyotypes and carefully monitoring post-perturbation presence of hybrids and chromosome frequencies. In all cases, frequencies quickly returned to pre-perturbation levels, and in the following sampling periods, no evidence of the introduced chromosomes was apparent. Analysis of post-perturbation frequency changes included tests for heterogeneity among chromosome arrangements in rates of return to equilibrium values using population admixture analysis. In several cases, significant heterogeneity was detected indicating some form of natural selection was operating. Technical challenges to carrying out perturbation experiments in the wild are also discussed. Keywords Natural selection - Genetic perturbation - Chromosome - Inversion - Drosophila robusta
机译：自然种群中基因或染色体频率的扰动是证明自然选择是否维持遗传多态性或其他进化力是否起作用的最有力方法之一。通过释放具有对比核型的成年果蝇并仔细监测杂种的摄动后存在和染色体频率，多次扰动了果蝇两个自然种群中的基因排列频率。在所有情况下，频率都迅速返回到摄动前的水平，并且在随后的采样周期中，没有明显迹象表明引入了染色体。扰动后频率变化的分析包括使用种群混合分析测试染色体排列之间异质性的返回平衡值的速率。在某些情况下，检测到明显的异质性，表明某种形式的自然选择正在起作用。还讨论了在野外进行微扰实验的技术挑战。关键词自然选择-遗传扰动-染色体-倒置-果蝇

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号