三管齐下破解“生物的变异”

• 作 者: 孙芸廷
• 出 处: 试题与研究
• 发表日期: 2014年33期
• 关键词: 变异基因 基因突变 变异类型 三管齐下 染色体结构变异 染色体组 基因重组 密码子 染色体分离 性状表现

本专题涵盖基因突变、基因重组和染色体变异。侧重考查对基因突变的产生、结果分析与特点的理解;对变异原因与变异类型的判断;对多倍体、单倍体形成的原因分析及多倍体、单倍体的特点的应用能力。近年来出现的生物变异类型的实验探究类题目较多,值得注意。

This topic covers gene mutations, gene recombination and chromosomal aberrations. Focus on examining the generation of gene mutations, the results of analysis and understanding of the characteristics of variation causes and types of judgments; polyploid, haploid formation of the reasons for analysis and polyploid, haploid characteristics of the ability to use. In recent years, there have been more topics on the experimental exploration of biological variation types, which are worth noting.