The following information accompanied a stock donated to the Bloomington Stock Center by Terry Orr-Weaver, Massachusetts Institute of Technology. Df(2R)Mos-ex68 is the larger of the two deletions depicted in Figure 3A of Ivanovska et al. (FBrf0167422). P{Taz-Dgkepsilon}2 is a second chromosome insertion of the 'covering transgene' shown in Figure 3A of Ivanovska et al. (FBrf0167422).