[Editorial Note: Yes, there are two human cultures in my conworld setting that are monogendered, but they're both female-only. In one case, the males were killed by alien captors who saw them as competition. In the other, the convergence of eugenics and intellectual property law made it possible to inherit copyrights matrilineally and obtain royalties from citations indefinitely; those who objected left to form their own culture, which is decidedly less prudish. If you want to accuse a writer of examining misogyny ne plus ultra, go bang on Frank Herbert's door; his fixation with axolotl tanks goes beyond Dune and can be found in Hellstrom's Hive (1973), long before they were actually expounded upon in his great opus.]