本实验继前次实验后,利用红宝石激光微束辐照显微操作技术,进一步研究了激光微束对黑腹果蝇奋发育阶段所需时间及死亡率的影响;同时,分析了F_1代、F_2代的性别比例。证明激光微束辐照确有延长果蝇生育期和致死的作用,经t测验,达显著水平。但对F_1代性比无影响,对F_2代性比略有影响。 In this experiment, the effect of laser microbeam on the time and mortality of Drosophila melanogaster during the developmental stage was further studied by using ruby ​​laser microbeam irradiation microscopy technique. In the meantime, F_2 Generation Sex Ratio. Proved laser beam irradiation did indeed extend the growth and lethal Drosophila role, by t test, reached a significant level. But had no effect on the F 1 substitution ratio but had a slight effect on the F 2 substitution ratio.