论文部分内容阅读
纵观近几年高考试题均从不同的角度考查了学生对育种专题知识的理解和掌握情况。现就育种方式进行简单的归纳总结。考点1杂交育种杂交育种是指利用具有不同基因组成的同种(或不同种)生物个体进行杂交,获得所需要的表现型类型的育种方法。原理:基因重组。方法:杂交→自交→选优。过程:用具有相对性状的纯合体作亲本
Throughout the college entrance examination papers in recent years have examined from different perspectives on the topic of knowledge and understanding of breeding knowledge. Breeding now a simple summary. Test site 1 Crossbreeding Cross breeding refers to the use of different gene compositions of the same (or different) biological hybrids to obtain the desired phenotype breeding methods. Principle: gene recombination. Method: Hybridization → selfing → selection. Process: Homozygotes with relative traits were used as parents