(A) klp-11 single mutants are not Dyf. klp-11 is SynDyf with arl-13, which is partially suppressed by deletion of hdac-6. (B) unc-119 single mutants are moderately Dyf. unc-119 is SynDyf with both klp-11 and nphp-2. unc-119; hdac-6; nphp-2 triple mutants exhibit suppression of the unc-119 Dyf phenotype. (C) Diagram of interactions between klp-11, arl-13, nphp-2, unc-119, and hdac-6, and between DR and TZ genes, based on SynDyf phenotypes presented in panels A and B and in Fig. 1 and S5 Figure. The T-bar indicates hdac-6 mediated suppression of SynDyf phenotypes. Data was analyzed with pairwise Mann-Whitney U-test between wild type, double mutants, and their respective single mutants, followed by the Holm-Bonferroni multiple comparison adjustment. *, significant versus single mutants at a total alpha of 0.05. **, significant versus single mutants at a total alpha of 0.01. nphp-2, arl-13, hdac-6, and arl-13; hdac-6 Dyf data is presented in Fig. 1.