Two scientists are in a relationship and work together to make an organism that grows into a little "kid" that they have to hide from the world and as it grows it turns into a girl and has sex with the male scientist and then later on it turns into a guy and rapes and kills the girl scientist, what is the name? Can any one help me ?

Try,.

Splice

-view trailer- (http://www.youtube.com/watch?v=6GBWU6RjiLM)