Fig. 5
From: Molecular evolution of hatching enzymes and their paralogous genes in vertebrates
Schematic representation of the molecular evolution of C6ast genes. The outline of the species lineage is shown in association with the presence or lacking (solid and dotted squares, respectively) of C6ast genes. The rounded rectangles schematically represent chromosomes, and genes located on the same chromosome are drawn on the same rounded rectangles. The arrows and arrowheads indicate the timing of loss acquisition, establishment or duplication of each genes