DNA的结构是高中生物必修二的核心内容,是“DNA是主要的遗传物质”一节内容的延伸,也是为学习DNA复制、转录和翻译以及变异奠定基础,所以是高考生物学重要的命题点。它与数学又有着紧密的联系,因而也一直是学生学习的难点,在高考中也常常成为考生的失分点。 The structure of DNA is an essential part of senior high school biology. It is an extension of the section “DNA is the main genetic material,” and also lays the foundation for studying DNA replication, transcription and translation as well as mutation. Proposition point. It has a close relationship with mathematics, which has been the difficulty of student learning, in the college entrance examination candidates often become points of loss.