Is there any scientific proof for the link between evolution and ethics? (NoHN)

Is there any scientific proof for the link between evolution and ethics?

So many people, I have realized, are rash to believe something if and only if there is scientific evidence for it. My question, along those same lines is if there is any scientific proof for the connection between evolution and ethics. We discussed it briefly in class and I am unsure as to whether that is simply speculation or something that can be backed up with proof. 

I understand that evolution, although I doubt evolution has anything to do with humans, but in the contexts for this class, attempts to prove that evolution can and perhaps has changed human psychology. However, does the psychology of one individual instantly determine their morals? Perhaps it does, i'm unsure. 

~Ama-Bemma