UASt regulatory sequences drive expression of an inverted repeat.
Expression of holn1KK100428 using Scer\GAL4Bx-MS1096 results in a range of phenotypes, from wild-type looking to a smaller, cylindrically curved wing with an increased number of veins, or a blistered wing with much of the surface converted to vein material.
Expression of holn1KK100428 using Scer\GAL4Act5C.PU results in late pupal lethality.