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遗传规律是中学生物中的核心板块,要求学生深刻理解本块知识并能熟练应用遗传规律.引导学生理解遗传规律并能够熟练应用遗传规律,需要在学生头脑中建构起遗传规律的知识构架并深化知识结构,用严密的逻辑思维应用分析、推导得出可能出现遗传特征,从而理解生物的多样性与生物的承继与发展.本文就应用遗传规律解题的正推与反推两种思维通过例题详解给出展示,以期达到找到解决这种问题的一般规律.一、正推法1.方法
The law of inheritance is the core part of middle school biology, requiring students to profoundly understand this piece of knowledge and be familiar with the application of genetic laws, to guide students to understand the laws of genetics and to be able to apply the genetic laws proficiently, and to construct and deepen the knowledge structure of the laws of inheritance in the minds of students Knowledge structure, using rigorous logical thinking analysis, deduced that there may be genetic characteristics in order to understand the succession and development of biological diversity and biology.This paper applies the genetic law to solve the problem of positive and negative thrust through two examples of thinking Give a detailed explanation of the show, with a view to finding the general rule to solve this problem.