550bp SalI genomic fragment from BrdP1, extending from the 5' untranslated region to a position approximately 180bp inside the blood element present in the 3' untranslated region, is expressed under the control of an Hsp70 promoter.
Heat shock of animals carrying Brdhs.PLa during the late larval and early pupal stages results in bristle multiplication and bristle loss phenotypes characteristic of Brd gain-of-function mutations.