title: The fitness of CyL and freckled (Frd) mutants of Drosophila melanogaster.
mesh_terms: D000367:Age Factors; D000818:Animals; D003433:Crosses, Genetic; D004331:Drosophila melanogaster / Q000254:growth & development*; D005260:Female; D005298:Fertility; D005804:Genes, Lethal; D007814:Larva / Q000254:growth & development; D008297:Male; D009026:Mortality; D009154:Mutation; D010063:Ovum; D011679:Pupa / Q000254:growth & development