<p>Wild-type worms approach a point source of 100% isoamyl alcohol more than <i>bbs-7(my13)</i> mutant animals (A). Wild-type and <i>bbs-7(my13)</i> mutant animals respond in a similar fashion to 1% isoamyl alcohol, 100% benzaldehyde and 100% diacetyl (B, C and D) when assessed using the Worm Chemotaxis Index. <i>bbs-7(my13)</i> animals do not show the same strength of attraction as wild-type animals to 1% isoamyl alcohol (E) but show the same degree of avoidance of 100% benzaldehyde (F). Error bars indicate standard error of the mean. P-values calculated using a standard t-test. ***<.001 **<.005 *<.05</p
