In a vacuum, nothing. In the context of a human being's existence, problematic ... right now there are companies and their lawyers in courts arguing that they 'own' a species of plant they genetically engineered and have sued to stop other farmers from growing it, even if the wind just carried some seeds over and they started growing wild. I doubt they would just shrug if, say, their engineered woman got pregnant, they would claim the fuck out of that kid if it were sufficiently profitable to do so. And that's only one example, there are all kinds of fun and unnerving possibilities