Homozygous pummilord-2 mutants show increased sensitivity to ethanol vapor compared with controls.
In memory tests, mutants perform at 107% of wild-type after a single training session, at 34% after spaced training.
Homozygotes exhibit severe defects in one-day memory after spaced training. Heterozygotes exhibit a weaker phenotype.
Etymology: Given the name "milord", after one of Pavlov's dogs.