title: Measurement of fitness at the esterase-5 locus in Drosophila pseudoobscura.
mesh_terms: D000818:Animals; D003433:Crosses, Genetic; D004330:Drosophila / Q000254:growth & development; D004950:Esterases; D005260:Female; D005298:Fertility; D005787:Gene Frequency; D006823:Hybrid Vigor; D008297:Male; D011110:Polymorphism, Genetic; D012641:Selection, Genetic; D012744:Sex Ratio; D013696:Temperature
chemical_list: D004950:Esterases