Polytene chromosomes normal.
Gynandromorph analysis demonstrates the mutation is lethal. Surviving adults have normal bristles but abnormal position of wings and legs. Shaking activity is noticeable. Homozygous ovarioles from germline mosaics give rise to mutant survivors.
Mutation in the maternal effect III (MEIII) region of the Sh complex.
Mutation within the maternal effect III (MEIII) region of the Sh complex.