sca5-120 mutants show conditioned aversion to ethanol when tested 30 minutes after training, although they fail to switch from conditioned aversion to preference. sca5-120 mutants show normal sensitivity to acute ethanol exposure, place-memory performance and olfactory-shock memory performance, indicating that their failure to form associations between odorants and the rewarding effects of ethanol is not a result of a general inability to learn. sca5-120 mutants show normal olfactory acuity and do not show any gross morphological abnormalities of the mushroom body.