Abstract:16Background: Male genitals have repeatedly evolved left-right asymmetries, and the 17 causes of such evolution remain unclear. The Drosophila nannoptera group contains four 18 species, among which three exhibit left-right asymmetries of distinct genital organs. In the 19 most studied species, Drosophila pachea, males display asymmetric genital lobes and 20 they mate right-sided on top of the female. Copulation position of the other species is 21
unknown. 22Results: To assess whether the evolution of genital a… Show more
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