Contains the osk gene in which the AB region cluster of aret response elements (BREs) in the 3' UTR has been mutated.
oskBRE.AB- rescues oskA87/Df(3R)osk
oskBRE.AB- almost completely rescues the cuticle defects of embryos derived from oskA87/Df(3R)osk females; 96% have wild-type cuticles, while 4% have head defects.