Fig. 6. chordin is required for FGF-induced dorsal axis formation in ichabod embryos. Phenotypic distributions for ichabod embryos injected with FGF3 (A), FGF8 (B) and ß-catenin (C) RNAs in the presence (yellow) or absence (red) of MOchd, compared with uninjected ichabod embryos (blue) for each. The most common class of embryo partially rescued by ß-catenin is dino-like. (D-J) Typical embryos are shown for each indicated condition.