APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -A phylogeny, or evolutionary tree, represents the evolutionary relationships among a set of organisms or groups of organisms, called taxa (singular: taxon). The tips of the tree represent groups of descendent taxa (often species) and the nodes on the tree represent the common ancestors of those descendants.

Detailed explanation-2: -Taxonomic classification is a hierarchical system used to categorize organisms to the species level, as is shown in Figure 1. The higher classifications are by domain and kingdom levels; however, the deepest and the most detailed classification is to genus and species levels.

Detailed explanation-3: -One branch of biology, called taxonomy, focuses on the classification of living things. Taxonomy is the study of relationships between living things and the formal classification of organisms into groups based upon those hypothesized relationships. Organisms are classified based upon their similarities and differences.

Detailed explanation-4: -Classification based on evolutionary relationships of organisms is called phylogenetic system of classification.