On this page: 1  Symptoms of glandular fever. 2  Cause of glandular fever. 3  Diagnosis of glandular fever. 4  Treatment for glandular fever. 5  Where to get help. 6  Things to remember.
A phylogenetic tree, also called and evolutionary tree, is a tree showing the evolutionary relationships among various biological species or other entities that are believed to have a common ancestor of the descendants, and the edge lengths in some tree correspond to time estimates.
Evolutionary trees depict clades. A clade is a group of organisms that includes an ancestor and all descendants of that ancestor. You can think of a clade as a branch on the tree of life.Some examples of clades are shown on the tree below. phylogeny, or evolutionary tree, represents the evolutionary relationships among a set of organisms or groups of organisms, called taxa (singular: taxon).