Gene ontology analysis of zebrafish embryos gene collection. Genes were categorized with the Biological Process domain. Significantly enriched GO terms have a probability lower than 0.01 (P value) and include at least three genes. GO terms are shown for both up- (in red) and down-regulated (in blue) groups if they are significantly enriched in at least one of them. Significantly enriched GO terms are indicated as full bars whereas non-significantly enriched terms are displayed as empty bars. Bars represent the number of genes assigned with the corresponding GO term. For the full list of represent genes in each category, see Additional file 3.