Selander, R K Genic variability and strategies of adaptation in animals. [electronic resource] - Proceedings of the National Academy of Sciences of the United States of America Jun 1973 - 1875-7 p. digital Publication Type: Journal Article ISSN: 0027-8424 Standard No.: 10.1073/pnas.70.6.1875 doi Subjects--Topical Terms: Adaptation, BiologicalAllelesAnimalsBirdsBrachyuraCaniformiaDrosophilaFishesGenesGenetic VariationGenetics, PopulationHeterozygoteHomeostasisHumansInsectaLizardsPolymorphism, GeneticRodentiaSnails