english: 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.
non_english: Postoje spremišta  gde samo uzmete telefon i naručite stotine ampula  različitih mutanata vinskih mušica i pregledate ih u svom ogledu da otkrijete koji gen je pogođen mutacijom.