umnIs51 [myo-2p::mKate2 + NeoR, II: 11755713 (intergenic)] III. Heterozygotes are wild-type mKate2+, and segregate wild-type mKate2+, DpyUnc non-mKate2, sterile Dpy mKate2+ mT1 homozygotes, and large numbers of arrested aneuploid embryos. Maintain by picking wild-type mKate2+ and check for correct segregation of progeny to maintain. Derived by insertion of myo-2p::mKate2 transgene into mT1 balancer in parental strain DR1832 using CRISPR/Cas9.