> But what diseases only target males? Dunno. Maybe the early domestication of livestock introduced some kind of chickenpox or dogpox that killed (or sterilized

> But what diseases only target males? Dunno. Maybe the early domestication of livestock introduced some kind of chickenpox or dogpox that killed (or sterilized!) males dramatically more frequently than females. Wolbachia is a parasite that, as I understand it, kills male infected at a very young age. Now, this only affects insects, but it does show that something this level of sex-selective is possible.