title: Genetic variation in natural populations: patterns and theory.
mesh_terms: D000220:Adaptation, Biological; D000818:Animals; D004463:Ecology; D004586:Electrophoresis; D014644:Genetic Variation; D005828:Genetics, Population; D006579:Heterozygote; D006801:Humans; D007448:Invertebrates; D008954:Models, Biological; D010944:Plants; D011110:Polymorphism, Genetic; D012641:Selection, Genetic; D014714:Vertebrates