Tree diagram
From Palaeos
The term tree diagram is used in different ways in different scientific and academic disciplines to describe a branching diagram that resembles a highly stylised tree.
In physics, a tree diagram is an acyclic connected Feynman diagram. The word tree is used just as in graph theory. A tree diagram corresponds to the results obtained from classical physics in which the effects of quantum mechanics are ignored. One does not need to perform any integrals to calculate a tree diagram. The full result for the physical quantity must however include one-loop Feynman diagrams and also more complicated diagrams.
In linguistics, a tree diagram is one way to visually represent the structure of a sentence (see X-bar theory), a syllable, or phonological feature geometry.
In statistical methods, a tree diagram is a schematic diagram which shows all possible outcomes of an event and the probabilities of each.
In computational biology a dendrogram is a tree diagram used to illustrate the clustering of genes. The term can also be used in a non-technical phylogenetic sense to refer to a phylogenteic tree.
In biological systematics, especially cladistics and phylogenetics, a cladogram is a type of tree diagram that shows the shared characteristics and relationships between different groups of organisms.
A phylogenetic tree or an evolutionary tree presents the postulated evolutionary relationships between different groups of organisms.
In biology the "tree of life" is a diagram in the form of a more realistic-looking tree, first found in the works of Ernst Haeckel, and repeated in many books. It has more recently bene superceeded by cladistic-inspired cladogarms and dendrograms.
