phenotype is associated with entity phenotypic class phenotype The subclasses of this term classify Drosophila phenotypes into different common categories. They have been chosen by FlyBase to reflect phenotype terms most often reported by Drosophila researchers in the published literature. phenotypic class phenotypic_class Any abnormality in or loss of some anatomical structure or biological process compared to wild-type. FBcv:0001347 phenotype Phenotype phenotype taxon specific phenotype