Fig. 4

Timing of recruitment of selected TE-derived sequences in vertebrate development. Selected examples are summarized in boxes corresponding to the different types of co-option. These examples are plotted with colored dots onto the vertebrate phylogeny, indicating their timing of appearance and phylogenetic distribution (circles correspond to ancestral events with orthologous sequences in the species, triangles correspond to convergent events). Silhouette images from http://phylopic.org.