Fig. 5. Developmental defects shared by larvae mutant for either Su(var)3-7 or Su(var)2-5. (A-C) Enlarged ring glands. (A) Su(var)3-7^R2a8 mutant. (B) Su(var)2-5⁰²/Su(var)2-5⁰⁵ mutant. (C) Wild-type control. Arrows point to the ring glands and dotted arrows show the larval brains. (D,E) Polytene chromosomes from the prothoracic gland of Su(var)3-7^R2a8 mutant and wild-type control at the same magnification. Stained with orcein. (F) Abnormal gastric ceca, swollen proventriculus and anterior midgut of Su(var)2-5⁰²/Su(var)2-5⁰⁵ mutant and wild-type control.