今年生物学高考试题的第四题,是考查考生能否运用所学的有关遗传规律的知识分析和解决问题。在第一问的解答中,首先对于自由组合规律的基本概念和实质要清楚,这样才有可能将三组亲本植株的基因型推导出来。每组亲本的基因型可能是多种组 The fourth issue of this year’s biology entrance exam questions is to examine the candidates can use the knowledge of genetic laws and solve the problem. In the first question’s answer, we should first of all understand the basic concept and essence of the law of free combination so that it is possible to deduce the genotypes of the three parental plants. The genotypes of each group of parents may be multiple groups