果蝇属昆虫纲,双翅目,果蝇科,是遗传实验的好材料.高中生物教材讲“基因的连锁和互换规律”时,是以果蝇为例的.尤其是“观察果蝇唾液腺细胞的巨大染色体实验”,要求用果蝇的三龄幼虫作实验材料.果蝇生活周期短,繁殖快,雌果蝇产卵多,在短期内可获得大量的幼虫,饲养较容易,为了满足中学生物教学的需要,保证高中生物实验的开展,最好自己饲养果蝇.中学不做果蝇的遗传杂交实验,不必保持纯种,只要能传种接代就可以;中学实验设备一般较简陋,因此,饲养的方法也只能因陋就简. Drosophila, Insecta, Diptera, Drosophilidae, is a good material for genetic experiments. When the high school biology textbooks talk about “the law of linkage and exchange of genes”, it is the case of fruit flies, especially the observation of fruit flies. “The giant chromosome test of salivary gland cells” requires the use of the third-instar larvae of Drosophila as the experimental material. The fruit fly has a short life cycle, rapid reproduction, and female ovipositors spawn more eggs. In the short term, a large number of larvae can be obtained and breeding is easier. To meet the needs of high school biology teaching and ensure the development of high school biology experiments, it is best to feed fruit flies on their own. Secondary schools do not conduct genetic hybridization experiments on fruit flies and do not need to maintain pure breeding, as long as they can pass on the species; secondary school laboratory equipment generally Simple, therefore, the method of feeding can only be due to simple.