The genus name is always capitalized and italicized. It represents a group of closely related species. For example, Homo is the genus name for humans.
2. The species name is written in lowercase and italicized. It refers to a particular species within the genus. For example, sapiens is the species name for modern humans.
3. The genus and species names are always written together. They are usually followed by the name of the scientist who first described the species, which is written in regular font and is not italicized. For example, the complete scientific name for modern humans is Homo sapiens Linnaeus.