P{EP}DysEP3397 is located 750bp upstream of the Dys 'dystrophin-like protein 2' isoform initiator ATG.
Flies whose posterior wing compartment is largely composed of clones of DysEP3397 homozygous mutant cells (induced in Minute/+ background to give them a growth advantage) show posterior cross vein (PCV) defects ('detached' PCV phenotype).
1 week old DysEP3397/Df(3R)Exel6184 flies show increased systolic diameter, increased diastolic diameter and decreased fractional shortening compared to wild-type controls.
det1/detEP3397 transheterozygotes show a posterior crossvein phenotype with 100% penetrance.
detEP3397/Df(3R)Exel6184 transheterozygotes show a posterior crossvein phenotype with 100% penetrance. 4% of mutant wings have a "gapped" phenotype, 76% have a "detached" phenotype, 19% have a "point" phenotype and 1% are crossveinless.
The number of hemocytes in the posterior crossvein region in detEP3397/Df(3R)Exel6184 pupal wings is either greatly reduced compared to wild type or they are completely absent.
detEP3397/Df(3R)ED5942 flies do not show the crossvein defect characteristic of det mutants, but show wing vein thickening.
Precise excision of the insertion in detEP3397 reverts the mutant phenotype.