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4讲：中性进化遗传漂变Lecture 4 - Neutral Evolution: Genetic Drift |
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| 课程网址: | http://videolectures.net/yaleeeb122f07_stearns_lec04/ |
| 主讲教师: | Stephen C. Stearns |
| 开课单位: | 耶鲁大学 |
| 开课时间: | 2010-04-17 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | Neutral evolution occurs when genes do not experience natural selection because they have no effect on reproductive success. Neutrality arises when mutations in an organism's genotype cause no change in its phenotype, or when changes in the genotype bring about changes in the phenotype that do not affect reproductive success. Because neutral genes do not change in any particular direction over time and simply "drift," thanks in part to the randomness of meiosis, they can be used as a sort of molecular clock to determine common ancestors or places in the phylogenetic tree of life. Reading assignment: Stearns, Stephen C. and Rolf Hoekstra. Evolution: An Introduction, chapter 3 |
| 关 键 词: | 中性进化; 遗传漂变; 遗传 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2020-09-25：yumf |
| 阅读次数: | 211 |