Abstract
The gene OdsH was the first speciation gene described in Drosophila, known for its role in reproductive isolation between the species Drosophila simulans and D. mauritiana, being related to the male hybrid sterility. It is proposed that OdsH originated from a duplication of the gene unc-4, in subgenus Sophophora, after its divergence from the subgenus Drosophila. However, our searches rea…