1. Cladistics is the study of organism classifications based on the shared characteristics of most recent common ancestors, this study assumed that the member of an organism groups shared common history and are closely related, while Phylogeny is the study of organisms’ developments and evolutions. It shows the evolution history of an organism and the traits and characteristics of each groups.
That’s why Cladistics gives information about the group of organisms’ common history that makes phylogeny determine the history of a certain organism.