FIGURE 5:

Schematic summary of centriolar and axonemal microtubules in species with canonical ninefold symmetry and in L. tuzetae. (A) Schematic of microtubule arrangement in the canonical situation, where 9-fold symmetrical microtubule doublets in the centriole yield a likewise ninefold symmetrical arrangement in the axoneme of the flagellum (middle). (B) Corresponding schematic in L. tuzetae, where eightfold symmetrical microtubule singlets in the centriole are followed by five- or sixfold symmetrical microtubule doublets in the axoneme.