Hermaphrodiite Revenge

Professor Patrick Moran is an unusually brilliant scholar. He is also a hermaphrodite who likes living as one in both male and female worlds. He is abducted from his beach house in Malibu by aliens from a parellel world who are in great need of human hermophrodites to breed with. Their problem is that all their women had died during a germ warfare attack on their planet and such humans are the only sexually compatible creatures they can find in the entire universe.
The aliens had been involved in the breeding program for generations now, utilizing mostly poor and ignorant hermaphrodies who are willing to undergo their abuse in exchange for food and shelter, and a very long lifespan. However, what the aliens receive in the person of Patrick is not a pliant outcast and misfit who is gratful for their handout, but a seethingly angry tiger who resents having been operated on to be turned into a true female without his consent. Pat's anger is even further inflamed when she is forced to copulate with the alien males and bear their children ceaselessly.
Now a fully fledged but extremely dangerous woman, Pat uses her immense mental capacity to discover a way to eliminate all the aliens, and finds a way to return back to her earth. All of which she eventually accomplishes with the help of a small group of when like herself who are willing to follow her leadership despite the danger to them.