Fig. 3

Expression of other candidate genes.

The majority of genes in this category can be characterized by a “dorsal-only” expression pattern: they are expressed both at sphere and at 30% epiboly stages in the dorsal side of wild type controls and are absent from ich embryos. The exception is rasl11b which shows a strong dorsal, and a fainter ubiquitous expression at sphere stage in wild types (Fi), but by 30% epiboly it is absent from the dorsal side and expression can be detected only ventrally (Fiii). Accordingly, in ich embryos lacking dorsal induction, faint ubiquitous expression (Fii) becomes progressively stronger during development (Fiv). Sphere stage embryos are shown from a lateral view, whereas ~30% epiboly stage embryos are presented from an animal view (dorsal to the right in both cases).