今年高考生物试题的第二大题有二小题,考生可任选一题作答。我省考生选做第1题的较多,且得满分的不少。可见,遗传的三个基本规律已被师生们重视。但从答卷来看也反映出目前高中生物教学存在的一些问题,下面谈一点粗浅的看法。 第1小题的题目是:在豌豆种子中,种子的黄色(Y)对绿色(y)是显性,种子的圆粒(R)对皱粒(r)是显性,这两对基因是自由组合的。试问两个亲本 The second major topic of this year’s college entrance examination biology test has two small questions. Candidates may choose one of the questions to answer. The candidates in our province chose to do the first one more, and they got a lot of perfect scores. It can be seen that the three basic laws of genetics have been taken seriously by teachers and students. However, from the perspective of the answer sheet, it also reflects some of the existing problems in high school biology teaching. Let’s talk about a few superficial views. The title of the first question is: In pea seeds, the yellow (Y) of the seed is dominant to green (y) and the round (R) of the seed is dominant to wrinkles (r). The two pairs of genes are Freedom of combination. Ask two parents