umnIs54 [myo-2p::GFP + NeoR, II: 11755713 (intergenic)] III. Heterozygotes are wild-type GFP+, and segregate wild-type GFP+, DpyUnc non-mGFP, sterile Dpy GFP+ mT1 homozygotes, and large numbers of arrested aneuploid embryos. Maintain by picking wild-type GFP+ and check for correct segregation of progeny to maintain. Derived by insertion of myo-2p::GFP transgene into mT1 balancer in parental strain DR1832 using CRISPR/Cas9.