Genetic interactions between dpp pathway components and rst. (A–F) Scanning electron micrographs of adult eyes taken at (A–C) 180× and (D–F) 800×. (G–I) 42 hours APF retinas stained with anti-Armadillo antibody. Removing a single functional genomic copy of tkv (B,E,H) or Mad (C,F,I) suppressed the rough eye phenotype of rst3 mutants (A,D,G).