Homozygous embryos show defects in the guidance of the intersegmental nerve in the periphery.
cherjoy/cherjoy mutants do not display any gross morphological defects of the mushroom body, and neither cherjoy/cherjoy nor cherjoy/+ mutants display any defects in sensorimotor responses (shock reactivity, octanol avoidance, and methylcyclohexanol avoidance) as compared to wild type.
cherjoy/cherjoy mutants display defective memory 1 day and 4 days after spaced training, but not 1-day after massed training in a Pavlovian olfactory learning context, as compared to wild type.
cherjoy/+ mutants do not display defects in memory 1 day and 4 days after spaced training, nor in memory 1 day after massed training in a Pavlovian olfactory learning context.
cherEPSĪ5/cherjoy mutants do not display defects in memory 1 day after spaced training in a Pavlovian olfactory learning context.
Homozygous cherjoy mutants show increased sensitivity to ethanol vapor compared with controls.
In memory tests, mutants perform at 104% of wild-type after a single training session, at 24% after spaced training.
Fmr1B55/Fmr1[+], cherjoy has abnormal memory phenotype
cherjoy/+; Fmr1B55/+ double heterozygotes display defective memory 1 day and 4 days after spaced training, but not 1 day after massed training in a Pavlovian olfactory learning context, but do not display any defects in sensorimotor responses (shock reactivity, octanol avoidance, and methylcyclohexanol avoidance) as compared to wild type.