Biopower and You Owe Us Your Organs

I am interested in the idea of what one is "supposed to do" or "made to do." This seems to be a recurring theme among the clones in Never Let Me Go. I don't think the interconnectedness we see in Hotel World and Ghostwritten, which imply that we all play a part and affect each other in some way, no matter how minor, has far to go to get to the idea that we are have a given purpose or part to play. I think this is the progression from systems of control and discipline to biopower that implies that we each have some sort of role or part to play, nothing as overt as, "You are clone; you owe us your organs." It's something more subliminal. After all, once you have been categorized, doesn't it make it that much easier to give you a role?