Table 1.

Phenotypes of mutants in some genes controlling the AWC^ON/AWC^OFF fate

Phenotype	Wild-type	olrn-1	daf-11	nsy-1	olrn-2a
Enhancement
Butanone	Normal	Abnormal	Abnormal	Normal	Abnormal
Adaptation
Butanone	Normal	Normal	Normal	Abnormal	Normal
Benzaldehyde	Normal	Abnormal	Normal	Normal	Normal
Chemotaxis
1:10 butanone	Normal	Normal	Normal	Normal	Normal
1:1000 butanone	Normal	Abnormal	Abnormal	Normal	Normal
Expression
str-2 expression	1 ON/1 OFF	2 OFF	2 OFF	2 ON	1 ON/1 OFF

The results show the diversity of AWC neurons concerning the sensitivity and plasticity to various odorants.

^a The olrn-2 gene does not control the AWC^ON/OFF fate but is added to this table for comparison.