Fig. 4.

BMP misexpression rescues split top mutants and endogenous BMP signaling is functional. (A) bozozok and (B) squint expression (sphere stage: animal view, dorsal to right). (C) bmp2b expression at shield (lateral view, dorsal to right) and mid-gastrulation. (D-G) Representative phenotypes and bar graphs of uninjected and bmp2b (D,E) or bmp7a (F,G) mRNA injected wild-type and split top mutant embryos. (H,I) Representative phenotypes and bar graphs of wild-type and split top mutant embryos uninjected or injected with chordin, noggin and fstl1b morpholinos (CNF MO).