ben << bk1 << wapm << eag << bk2
This deletion removes multiple ribosomal protein-coding genes (in addition to other genes).
The Fas2-positive longitudinal tracts are positioned farther apart from the midline than normal in mutant embryos.
Flies heterozygous for the deletion do not show a Minute bristle phenotype.
Midgut development of mutant embryos is wild type.
Hemizygous embryos were examined with polarised light microscopy and antibody staining: muscle pattern abnormal due principally to variably expressed defect in insertion site positioning.