Fig. 5.

Algal species are compared in terms of phylogeny, number and orientation of flagella, arrangement of BBs/basal architecture (see also SI Appendix), and patterns of coordination defined by the relative phases between flagella. Vertical lines approximate the relative phylogenetic distance from a putative flagellate ancestor (SI Appendix) (only partial branchings are shown). Free-swimming quadriflagellate gaits are readily identified with quadruped locomotion, revealing the symmetries of an underlying oscillator network. Asterisk (*): Quadriflagellate dikaryons of CR gametes perform a double breaststroke gait with the same symmetries as the pronk (Movie S5), but this gives way to a bound gait when both sets of flagella undergo phase slips simultaneously. Double asterisk (**): See Movies S7 and S8.