REU: Gene Flow in Lake Erie Island and Mainland Snake Population

REU：伊利湖岛和大陆蛇种群的基因流

• 批准号: 9107382
• 负责人: Richard King
• 金额: $ 3.5万
• 依托单位: Northern Illinois University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-12-15 至 1993-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9107382&HistoricalAwards=false
• 关键词: REU; Gene; Flow; Lake; Erie

The individuals constituting a species frequently differ in appearance from one locality to another, but the processes which result in this variation are often difficult to recognize. Processes producing such geographic differentiation include chance events brought about by isolation or adaptation to local conditions. Countering these processes is gene flow, the transfer of genetic material from one location to another (e.g., via the movement of individuals). Unfortunately, few examples exist where the interplay among such processes is clearly understood. Island and mainland populations of snakes in western Lake Erie provide a situation where the importance of gene flow can be studied with relative ease. These populations are unusual because of the large amount of color pattern variation they exhibit. Alternative explanations for this variation differ in the amount of gene flow they require. This project aims to measure rates of gene flow among island and mainland snake populations using gel electrophoresis, a technique which makes use of genetically based differences in protein structure to characterize variation within and among populations. Coupled with information on local adaptation and on the geological history of the region, this project will provide an unusually detailed picture of the processes giving rise to geographic variation.

构成一个物种的个体常常在以下方面不同： 从一个地方到另一个地方的外观，但过程， 这种变化的结果通常难以识别。 产生这种地理差异的过程包括机会 隔离或适应当地环境所带来的事件 条件 对抗这些过程的是基因流， 遗传物质从一个位置到另一个位置（例如，经由 个人的行动）。 不幸的是，很少有例子 这些进程之间的相互作用已得到明确理解。 伊利湖西部岛屿和大陆蛇类种群 提供了一种情况，在这种情况下，基因流的重要性可以被 研究相对容易。 这些人口是不寻常的，因为 它们所表现出的大量的颜色模式变化。 对这种变化的其他解释在数量上有所不同 他们需要的基因流。 该项目旨在衡量 利用凝胶电泳技术研究岛屿和大陆蛇类种群间的基因流动 电泳，一种利用遗传基础的 蛋白质结构的差异来表征 在人群中。 加上当地的信息， 适应和该地区的地质历史，这 项目将提供一个异常详细的过程图片 从而导致地理变异。