title: Phenotypic structure and bifurcation behavior of population models.
mesh_terms: D000367:Age Factors; D004463:Ecology; D005787:Gene Frequency; D005828:Genetics, Population; D006579:Heterozygote; D008433:Mathematics; D008954:Models, Biological; D010507:Periodicity; D010641:Phenotype; D011157:Population Dynamics; D012098:Reproduction; D012641:Selection, Genetic