遗传问题是高中生物学的一大难点,其理论性强,概念复杂.遗传问题的题型很多,题目灵活,富于变化,且逻辑性较强.但学生平常学习往往缺乏必要的解题思路和技巧. 根据碱基互补配对原则形成碱基对,这是 DNA分子双螺旋结构中的一个重要特征.教材中仅仅只是说明：腺嘌呤 (A)一定与胸? Genetic problems are a major difficulty in high school biology. They are theoretically complex and have complex concepts. There are many types of questions in genetic problems, and the topics are flexible, varied, and logical, but students usually lack the necessary problem-solving ideas to study. And techniques. The formation of base pairs based on the principle of base pair complementary pairing is an important feature of the double helix structure of DNA molecules. The textbook simply states: Adenine (A) must be associated with the chest.