Isolation and characterization of Df(3R)BSC24 Megan Deal-Herr and Kevin Cook Bloomington Drosophila Stock Center, Indiana University Df(3R)BSC24 was isolated as a P transposase-induced male recombination event involving P{EP}EP707EP707 and P{EP}EP3243. The deletion was isolated as a st1-ca1 recombinant chromosome from the cross st1 Sbsbd-1 es ro1 ca1 females X CyO, H{PDelta2-3}HoP2.1/+; st1 EP(3)3243/P{EP}EP707EP707 ca1 males. Polytene chromosome squashes showed the breakpoints 85C4-9;85D12-14. Df(3R)BSC24 failed to complement pum13, neur1, and osk6. The deficiency chromosome retains the miniwhite marker from one or both P{EP} elements.