Last Girl

You are the last girl in a world populated by men. Women died out a long time ago so only men rule world surviving through the process of cloning. You are a freak accident in their attempts to recreate women, but they don't understand how you came to be. So the scientists keep you inside the lab. Only able to leave disguised as a boy and along with supervision of at least two scientists. Otherwise crazy things will happen if the world knew of your existence.