Expression of csw::Src64Bsrc90.Scer\UAS under the control of Scer\GAL4twi.PG partially suppresses the loss of VA2 muscle precursor cells seen in csw5/Y embryos derived from homozygous female germline clones. The eve-positive muscle progenitors and subsequent pericardial and DA1 precursor cells are recovered in csw5/Y embryos that are also expressing csw::Src64Bsrc90.Scer\UAS under the control of Scer\GAL4twi.PG.
The extent to which posterior pattern elements are formed directly reflects the magnitude of tor signal. Thus mutants derived from germ line clones can be ordered with respect to increasing posterior abnormalities thus: phl1 (normal posterior patterning) - csw6 - csw6,phl1 - csw5,phlPB26 (deletion of A8).
Mutant phenotype can be rescued by cswhs.PP. Fully zygotically rescued adult males are fertile and when crossed to heterozygous females produce both male and female progeny. These females generate eggs with fused dorsal appendages. Examination of rescued adults reveals consistent defects; absence of one or both aristae, lack of one or more of the distal-most leg segments, incomplete formation of the distal portions of wing vein L5, eyes have reduced numbers of disorganised ommatidia and interommatidial bristles.