[Analysis of somatic mosaicism in the Drosophila melanogaster radiosensitive mutant rad(2)201G1]

Using heterozygosity for bw mutations, the frequency of somatic mosaicism has been studied in Drosophila melanogaster flies, homozygous for radiosensitive mutation, rad(2)201G1, and in those not carrying the mutation. Data obtained for control and after irradiation of larvae with 150, 450 and 750 R showed that homozygotes for the rad(2)201G1 were characterized by elevated levels of both spontaneous and induced mosaicism.