GENETIC-ANALYSIS OF MUTANT CHROMOSOME-3 W ITH SIMILAR PHENOTYPIC EFFECT FROM GEOGRAPHICALLY DISTANT POPULATIONS OF DROSOPHILA-MELANOGASTER

From geographically distant populations of Drosophila melanogaster, th e following mutant phenotypes with a wide spectrum of similar phenotyp ic variation were isolated: #89300 and #89386 from a population of Uma n' (Ukraine) in 1989, and #920017, #921314, and #921503 from a populat ion of Gorno-Altaisk (Altai) in 1992, A similar mutant phenotype (line #i13) was obtained by gamma-irradiation of the laboratory line Canton S. Phenotypic changes involve eye shape and structure, morphology of body appendages (wings, legs, and antennae), and fertility. Genetic an alysis of mutations #89300 and #89386 showed that they belong to the t hird linkage group. Chromosomes 3 of mutants #89300 and #89386 carry i nversions ln(3R)92D-98F and ln(3R)89F-95A, respectively. A complementa tion test for allelism of the isolated mutations among themselves and with several laboratory lines was conducted. The mutant phenotypical e ffect of the chromosomes isolated is assumed to be related to geograph ic variants of alleles of two closely licked genes; rotund and roughen ed eye and claret.