Listening to the Robert Wright’s audiobook, Moral Animal, it’s become even more apparent that ethics and morality are the results of a later stage of an evolutionary strategy. Not that he’s saying that.
After cognitive abilities came language and then, presumably, ethics then moral proto-structures. Subsequently, gods and God came into fashion.
That morality is the result of evolutionary progression is not particularly controversial, but sociobiologists seem to view the evolutionary development of morals as a parallel to Chomsky’s theory of innate language and universal grammar. My modification is that morality (as distinct from mores, customs, and such) necessarily requires language and cannot exist independent of language.
Given the evolutionary perspective, it is obvious that this concept will not be popular for those who do not support this base position, but it should not much of a stretch for those who do.