Final answer:
Carl Linnaeus, a Swedish botanist, came up with the dual taxonomy theory, which is the foundation of modern taxonomy.
Step-by-step explanation:
He developed the binomial naming system for organisms, where each organism is assigned a genus and species name.
Carl Linnaeus, a Swedish botanist, is credited with coming up with the dual taxonomy theory. He is considered the inventor of modern taxonomy and built on Aristotle's work to create his own classification system.
Linnaeus developed the two-name system of naming organisms, with each organism having a genus and species name. This system, known as the binomial naming system, is still used today. Linnaeus's contributions to taxonomy have had a lasting impact on the field.