Ethylmethane sulfonate- and X-ray-induced mutability of the loci of chromosome III in normal strains of Drosophila melanogaster and strains defective in excision repair

The frequencies of spontaneous and ethylmethanesulfonate and X-ray-induced mutations in III chromosome of strains D-32 (wild type) and mei-9LI deficient in excision repair have been studied. Mutations have been induced in mature spermatozoa and analysed using multiply marked strain rucuca. It has been shown that the spectra of mutability and frequencies of mutations don't differ in both strains. It indicates the absence of specificity of mutagens studied.