In Rattus rattus the generic and the specific names are the same. It is an example of

autonym

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tautonym

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phylum

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species

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Solution

The correct option is B tautonym
When the genus and species of an organism have the same name it is called as a tautonym.
Tautonyms are only allowed in zoological nomenclature. Eg: Gorilla gorilla (Gorilla), Naja naja (Cobra).

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