高中《生物》中“遗传和变异”一章的教学,目的在于使学生从分子水平上初步了解遗传物质及其作用原理、遗传物质传递和变化的规律,从而能够正确地解释生物界普遍存在的遗传和变异的生命现象,初步认识遗传和变异是生命延续和发展的内因以及生物进化的重要因素之一,并且了解这些规律在实践中的应用。这一章的复习应注意下述问题: The purpose of the teaching of “Genetics and Variation” in Biology in High School is to enable students to first understand the rules of genetic material, its principle of action, the transmission and variation of genetic material at the molecular level so as to correctly explain the ubiquity Genetic and mutation of the phenomenon of life, a preliminary understanding of genetic and mutation is the continuation of life and development of internal and biological evolution of one of the important factors, and understanding of these laws in practice. The review of this chapter should pay attention to the following questions: