Polygenism is a theory of human origins which posits the view that the human races are of different origins. This view is opposite to the idea of monogenism, which posits a single origin of humanity.

What does Polygenesis mean in English?

: development from more than one source.

What does the word Monogenesis mean?

: origin of diverse individuals or kinds (as of language) by descent from a single ancestral individual or kind.