title: Improvement of litter size in a strain of mice at a selection limit.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D003433:Crosses, Genetic; D005298:Fertility; D005787:Gene Frequency; D005804:Genes, Lethal; D005808:Genes, Recessive; D005828:Genetics, Population; D006823:Hybrid Vigor; D007178:Inbreeding; D051379:Mice; D008815:Mice, Inbred Strains; D008954:Models, Biological; D010641:Phenotype; D012641:Selection, Genetic