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筛选是分离和培育生物新类型过程中常用的手段,研究分析有关筛选问题的试题,可以训练学生思维的严谨性和创造性,提高学生分析和解决问题的能力。在现代生物技术中常遇到有关筛选问题,现进行归纳例析,以供参考。一、基因工程中的筛选问题在基因工程中,利用运载体上的标记基因可以筛选出导入了目的基因的受体细胞。
Screening is a commonly used method in the process of separating and cultivating new types of organisms. Researching and analyzing questions on screening can train students ’rigor and creativity in thinking and enhance students’ abilities to analyze and solve problems. In the modern biotechnology often encounter the problem of screening, are now inductive analysis, for reference. First, genetic engineering screening problem In genetic engineering, the use of the carrier marker gene can be screened into the target gene receptor cells.