title: Persistence of heterosis in crosses between geographical races of Drosophila ananassae Doleschall.
mesh_terms: D000818:Animals; D007446:Chromosome Inversion; D003433:Crosses, Genetic; D004330:Drosophila; D005260:Female; D006579:Heterozygote; D006720:Homozygote; D006823:Hybrid Vigor; D006824:Hybridization, Genetic; D008297:Male