What is the phylogenetic classification based on?

Answer: Phylogenetic classification systems reveal organisms’ evolutionary relationships. Phylogenetic classification systems arose as a result of the acceptance of Charles Darwin’s theory of evolution as well as natural selection, as outlined in his book “On the Origin of Species.” Darwin proposed that modern plants and animals descended from ancestral ones post undergoing some periodical changes. As a result, phylogenetic classification has been based on a group of organisms’ evolutionary descent, and the connections are depicted using a phylogram and a cladogram.