Final answer:
Carl Linnaeus was the first scientist to use phylogenetic taxonomy and give it its own domain, introducing the two-name system of naming organisms.
Step-by-step explanation:
Carl Linnaeus was the first scientist to use phylogenetic taxonomy and give it its own domain. He is considered the inventor of modern taxonomy and the two-name system of naming organisms. Linnaeus created a hierarchical classification system and introduced binomial names, which consist of a genus name and a species name. His contributions to taxonomy laid the foundation for the classification systems used today.