Answer:
The genus and the species
Step-by-step explanation:
Carolus Linnaeus, who is referred to as the FATHER OF TAXONOMY proposed a principle used in naming organisms till date. This system of naming organisms is called BINOMIAL NOMENCLATURE SYSTEM, which comprises of two Latin names for each organisms.
The binomial nomenclature gives an organism its scientific name using the GENUS of such organism and it's SPECIFIC NAME. For example, dogs have their scientific name as Canis familiaris, this means that:
Canis - Genus
Familiaris - species