一、高考热点聚焦遗传、变异、进化和基因工程部分是中学生物学的重点和难点,也是高考考查的热点。遗传的物质基础、遗传的基本规律和生物的变异及其与生物进化的关系,在整个高考中占有核心位置。它不仅有重要的理论价值,而且在实践中与人类的生产、生活关系极为密切。从近几年的高考试题来看,将减数 First, the focus of the college entrance examination on genetics, variation, evolution, and genetic engineering is the focus and difficulty of biology in middle schools. It is also a hot spot for college entrance examinations. The material basis of genetics, the basic laws of genetics, and the variation of organisms and their relationship with biological evolution occupy the core position in the college entrance examination. It not only has important theoretical value, but also has a close relationship with human production and life in practice. From the high examination questions in recent years, the number will be reduced