polygenism
Pronunciation:
/pəˈlɪd͡ʒənɪzəm/noun
Definitions
(ethnology) The belief that humans descended from more than one ancestral pair.
Example: 2003: Such pigmental indelibility spelt polygenism for some: blacks formed a distinct species altogether, a separate creation. — Roy Porter, Flesh in the Age of Reason (Penguin 2004, p. 248)