“3+Ｘ”的高考模式在全国实施指日可待,作为生物教师,应做好高考备考的教学研究。从近几年上海考题中不难看出,涉及遗传学的试题不仅比重大,且难度也在增加。笔者在教学中采取精选一些代表性的例题,并把各种解题方法和技巧的教学纳入对思维过程的分析之中,加强一题多解的... The “3+X” college entrance examination model is just around the corner. As a biology teacher, we should do a good job of the college entrance examination preparation. It is not difficult to see from the examination questions in Shanghai in recent years that the questions involving genetics are not only significant but also the difficulty is increasing. In the teaching, the author adopts some representative examples, and incorporates the teaching of various problem-solving methods and techniques into the analysis of the thinking process.