phylogenetic tree
This term is a technical compound noun used primarily in biology, genetics, and anthropology. It describes a visual hypothesis of evolutionary history, where the branching points (nodes) represent common ancestors and the tips represent extant or extinct taxa. It is distinct from a genealogical tree, which tracks individual ancestry within a single species, whereas a phylogenetic tree tracks the divergence of entire lineages over geological time.
In academic writing, the term is used with high precision to discuss cladistics and molecular phylogenetics. It is almost always used in a formal, scientific register. Because it refers to a specific conceptual model, it is treated as a standard countable noun in research papers, often appearing in the plural when comparing different possible evolutionary scenarios.
Meanings
A branching diagram or graph that represents the evolutionary relationships among various biological species or other entities based upon similarities and differences in their physical or genetic characteristics.
The researchers constructed a phylogenetic tree to determine the common ancestor of the two primate species.