title: Persistence of lethal genes in Japanese natural populations of Drosophila melanogaster.
mesh_terms: D000483:Alleles; D000818:Animals; D002874:Chromosome Mapping; D004330:Drosophila; D005787:Gene Frequency; D005804:Genes, Lethal; D005816:Genetic Complementation Test; D006579:Heterozygote; D007564:Japan; D009154:Mutation; D012641:Selection, Genetic