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monogenesis mon·o·gen·e·sis (mŏn'ə-jěn'ĭ-sĭs)
The theory that all living organisms are descended from a single cell or organism.
The production of similar organisms in successive generations.
Asexual reproduction, as by sporulation or parthenogenesis.
The process of parasitizing a single host, in or on which the entire life cycle of the parasite is passed.