There are repositories where you can just pick up the phone and order hundreds of vials of flies of different mutants and screen them in your assay and then find out what gene is affected in the mutation.
你可以拿起电话跟仓库预定 数百瓶的不同类型的变异的果蝇 并且在试验中监测它们来找出 什么基因在突变中起了变化。