pro·​to·​gene | \ ˈprōtə+ˌ-\

Definition of protogene

1 : a dominant gene or factor
2 [ International Scientific Vocabulary, from New Latin protogenes primeval, firstborn, from Greek prōtogenēs, from prōt- prot- + -genēs born ] : a hypothetical mutable primary unit that is capable of reduplication, is held to have differentiated from nonliving matter, and is regarded as a precursor of living beings

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History and Etymology for protogene

prot- + gene

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