The following information accompanied stocks donated by Rachel Kraut, Cal Tech (6/00). Df(2R)D4 has the breakpoints 57A1-3;57B13. It complements shg mutations and Df(2R)F36, but fails to complement insc mutations. Df(2R)E2 has the breakpoints 57B1;57B13-14. It fails to complement shg and insc mutations, but complements Df(2R)F36.