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.
1 A phylogram is a phylogenetic tree that has branch spans proportional to the amount of character change. 2  A chronogram is a phylogenetic tree that explicitly represents evolutionary time through its branch spans. A Dahlgrenogram is a diagram representing a cross section of a phylogenetic tree. 2  A phylogenetic network is not strictly speaking a tree, but rather a more general graph, or a directed acyclic graph in the case of rooted networks.