dunce, a mutant of Drosophila deficient in learning.
Normal Drosophilia learn to avoid an odorant associated with electric shock. An X-linked mutant, dunce, has been isolated that fails to display this learning in spite of being able to sense the odorant and electric shock and showing essentially normal behavior in other respects.
D000818:Animals; D001362:Avoidance Learning / Q000502:physiology*; D002874:Chromosome Mapping; D004331:Drosophila melanogaster / Q000502:physiology*; D008040:Genetic Linkage; D009154:Mutation; D012730:Sex Chromosomes; D012903:Smell