Figure 6.

unc-13 behavioral phenotypes are recessive, and L and R mutants fail to complement one another. Thrashing values are body bends per minute measured during a 2-min interval; values are means of 10–20 nematodes ± SDs. The wild-type data are representative of tests on a single day. Probabilities were calculated with the use of Student's t test for each strain versus a matched set of wild-type nematodes. *Significantly different from wild-type (p < 0.001). The homozygous unc-13 alleles (e51, e1091, md1325, and s69) are not significantly different from each other or from e1091/md2415 or s69/md2415.