Fig. 2.

Volvocine green algal phylogeny and SDR or MT evolution. Asexual or vegetative phase, sexual phase, MTM and MTF, or SDLR and phylogenetic positions of V. reticuliferus and V. africanus are illustrated with those of five other species previously studied [C. reinhardtii, Gonium pectorale, Yamagishiella unicocca, Eudorina sp., and V. carteri (19, 21, 23, 24)]. Note that all three of these Volvox species belongs to the section Merrillosphaera (SI Appendix, Fig. S1).