Fig. 2. Reduced Dpp signaling causes dorsal-ventral phenotypes in wol¹ germline clone embryos. (A,B) Ventrolateral views of cellularized Drosophila embryos. Expression of rho in dorsal cells occurs in wild type in response to Dpp signaling, but is lost in wol embryos (arrows). (C-E) Dorsal views of cellularized embryos showing expression of the Dpp target gene Race (C,D) or of Race and dpp (E). Ectopic dpp (purple) expressed from the Krüppel enhancer (Kr:dpp) was able to rescue Race expression (brown) in wol mutant embryos (E). (F,G) Lateral views of cellularizing embryos. Expression of dpp is reduced in wol embryos (G).