Significant locomotor and coiling defects in hom/hom mutants. A and B: burst count per minute (A) and burst duration (B) were measured for the following different genotypes: wild type (WT), tardbp−/−, tardbpl−/−, het/hom, and hom/hom at 17 h postfertilization (hpf). hom/hom mutants show a significantly reduced burst count per minute compared with all the other different genotypes. C: 4 superimposed locomotor path traces of 48-hpf larvae from the following different genotypes: WT, tardbp−/−, tardbpl−/−, het/hom, and hom/hom. D–F: swim duration (D), swim distance (E), and maximum velocity (F) were measured for each treatment group in the touch-evoked escape response (TEER) assay. hom/hom mutants displayed significant locomotor defect in all parameters of the TEER assay compared with all other different genotypes (**P < 0.01). Additionally, het/hom mutant larvae also showed significantly reduced swim distance compared with WT, tardbp−/−, and tardbpl−/− larvae (*P < 0.05). Numbers in parentheses indicate sample sizes for the TEER assay in each treatment group. Data are means ± SE.
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