Fig. 6

Detailed expression and functional characteristics of young genes. a Shown are the detailed gene numbers of each category classified based on gene age grades (4 grades of GOT_Ens of the five species) and 3 grades of gene expression width (WE, widely expressed; SS, stage-specific and Other). The gene numbers of key categories are shown in red. b The meaning of heat map is similar to that of Fig. 5b. The symbols representing over-/under-representation strength are the same as those in Fig. 2. c Venn diagrams of the significantly over-represented GO terms (biological processes, BPs) for the four categories of interest. d The distribution of stage-specific (SS) genes and stage-specific young genes among the different developmental stages analyzed. The numbers of SS genes and the numbers of youngest SS genes are shown as histograms, referencing the left axis in each sub-panel. The percentages of SS genes in the expressed genes in each stage are shown as line charts, referencing the right axis in each sub-panel