title: [Mechanisms maintaining the genetic variability in a population (author's transl)].
mesh_terms: D000818:Animals; D004330:Drosophila / Q000235:genetics; D004331:Drosophila melanogaster / Q000235:genetics*; D004950:Esterases / Q000235:genetics*; D014644:Genetic Variation; D012621:Seasons
chemical_list: D004950:Esterases