[Analysis of mutations induced by alkylating compounds in Drosophila sperm. I. Character of visible changes induced by N-nitrosoethylurea and ethylmethanesulfonate in a succession of Drosophila generations].

Newly appearing hereditary traits were observed in several generations of Drosophila melanogaster: changes in eye and body colour, wing shape, number and shape of chaetae. The results obtained may be interpreted as the evidence for the realization of potential changes induced by NEU and EMS into visible mutations during 1-4th generations. X-irradiation (at a dose of 1000 r) of males from the first generation did not affect the realization of long-living potential changes induced by NEU.