Has memetics molded our moral beliefs?

Have our morals beliefs been molded by memetics?
Memetics is about the spread of ideas, ideas that successfully spread survive and ideas that fail to spread will die.
Ideas could die out not by us not being connived by them or changing our minds but also by us dying.
Believing in ideas that would allow us to die, or a chaotic society that would make it more likely for us to die, not just directly but also indirectly would not survive.
I will try to give terrible example to how this may explain why we think stealing is wrong something that would not directly allow us to die.
If we allowed maybe stronger people to steal our possessions such as food and other things that make our life easier, we would maybe find life harder and not survive.

I’m honestly looking for feed back on this idea to point out pros and cons to this idea