Light dependence in matings of Drosophila pseudoobscura.
D000818:Animals; D003624:Darkness; D004330:Drosophila / Q000502:physiology*; D005260:Female; D005824:Genetics, Behavioral; D006801:Humans; D006824:Hybridization, Genetic; D008027:Light; D008297:Male; D012098:Reproduction; D012641:Selection, Genetic