Asymmetry is lost in the AWC neurons as str-2::GFP is expressed in both AWC neurons (2 AWC on). Normally str-2::GFP is stochastically expressed in one of the two AWC neurons.
The two morphologically bilaterally symmetric olfactory neurons AWC left (AWCL) and AWC right (AWCR) fail to undergo a left/right asymmetric diversification in cell fate.