遗传 ›› 2013, Vol. 35 ›› Issue (1): 107-110.doi: 10.3724/SP.J.1005.2013.00107

• 遗传学教学 • 上一篇    下一篇

一种验证孟德尔定律中F2性状分离比的新方法——显性观察法

马海财1, 2, 谢小冬2   

  1. 1. 甘肃民族师范学院, 合作 747000 2. 兰州大学基础医学院, 兰州 730000
  • 收稿日期:2012-09-17 修回日期:2012-10-21 出版日期:2013-01-20 发布日期:2013-01-25
  • 通讯作者: 谢小冬 E-mail:xdxie@lzu.edu.cn
  • 基金资助:

    甘肃民族师范学院优秀课程建设项目(编号:2011136)资助

A new method to determine the proportion of characters F2 in the Mendelian inheritance—the observation method of dominant traits

MA Hai-Cai1,2, XIE Xiao-Dong2   

  1. 1. Gansu Normal University for Nationalities, Hezuo 747000, China; 2. School of Basic Medical Sciences of Lanzhou University, Lanzhou 730000, China
  • Received:2012-09-17 Revised:2012-10-21 Online:2013-01-20 Published:2013-01-25

摘要: 在教学研究的基础上, 总结推导出了一种快速验证孟德尔遗传定律中多对相对性状F2分离后各自性状比值的新方法--显性观察法。其原理是通过观察F2代显性性状的表现种类数, 快速确定分离性状和各自对应的表现比值, 即以3为底数, 以某一个体中显性性状表现型的种类数为指数, 计算F2后代各自性状的比值, 该方法简便易操作, 为教学和基层相关领域的科研节省了时间。

关键词: 性状, 验证, 孟德尔规律, 显性性状观察法, 指数, 底数

Abstract: A new method, the observation method of dominant traits, which can be used for determining the proportion of characters from F2 under the Mendelian Inheritance, was discovered. The principle of this method is that people can conclude a general formula:3n1 (n1: the number of dominant characters types in F2) based on the proportion of characters from F2 under the Mendelian Inheritance. This method is more convenient and time-saving than common tests in teaching and practice of classic genetics.

Key words: base, determine, character, Mendelian inheritance, the observation method of dominant trait, index