减数分裂一节,无论在高校或高中生物教学中都是很重要的.所以让学生亲自做这个实验,将对于加深理解和解决教学重点有极大的帮助.但是,传统做减数分裂实验所用的材料都是用蚕豆花粉或蝗虫精巢.这里介绍的葱花药作为减数分裂实验材料是许多材料所不及,其优点为:(1)染色体大;(2)染色体数目少,便于观察计数(z~n=16);(3)材 The meiosis section is very important in both biology and high school biology teaching. Therefore, letting students do this experiment personally will greatly help to deepen understanding and solve the teaching focus. However, the traditional meiosis experiment All the materials used are faba bean pollen or aphid testes. The onion anthers introduced here as meiotic test materials are not as good as many other materials. The advantages are: (1) large chromosomes; (2) small number of chromosomes for easy observation and counting ( z~n=16); (3) Material