title: Towards a theory of the evolution of modifier genes.
mesh_terms: D000483:Alleles; D005075:Biological Evolution; D005787:Gene Frequency; D005796:Genes; D008040:Genetic Linkage; D005838:Genotype; D007178:Inbreeding; D008954:Models, Biological; D009154:Mutation; D010641:Phenotype; D011110:Polymorphism, Genetic; D012641:Selection, Genetic