Figure 1From: Asymmetrical sexual isolation but no postmating isolation between the closely related species Drosophila suboccidentalis and Drosophila occidentalis Pure species mating rates. Mating rates within and between species in no-choice trials. Error bars indicate the binomial 95% confidence intervals. “Subo” refers to D. suboccidentalis and “Occ” refers to D. occidentalis. Ninety-fine trials were completed for each type.Back to article page