Selection against recessive deleterious and lethal alleles.
D000483:Alleles; D005787:Gene Frequency; D005804:Genes, Lethal; D005808:Genes, Recessive; D005838:Genotype; D006579:Heterozygote; D006720:Homozygote; D008433:Mathematics; D008954:Models, Biological; D009154:Mutation; D012641:Selection, Genetic