title: A population cage test for heterosis in Drosophila pseudoobscura.
mesh_terms: D000818:Animals; D002875:Chromosomes; D004330:Drosophila; D005260:Female; D005298:Fertility; D005804:Genes, Lethal; D005828:Genetics, Population; D006823:Hybrid Vigor; D006824:Hybridization, Genetic; D008297:Male; D011110:Polymorphism, Genetic; D012641:Selection, Genetic