UASt regulatory sequences drive expression of an inverted repeat.
Scer\GAL469B-mediated expression results in larval cuticle molting defects - mutants show characteristic double-cuticles of head skeleton and posterior spiracles in the second and third instar larvae.
Scer\GAL469B-mediated expression results in large epidermal lesions at wounded sites of first instar and immediate lethality.
Scer\GAL469B-mediated expression results in epidermal cuticle morphology defects in third instars - unusually narrowed ECM thickness and deformed chitin-matrix, and absence of lamellate chitin-scaffolds.