A<unk> , also called an evolutionary<unk> , is a<unk>  showing the evolutionary relationships among various biological species or other entities that are believed to have a common ancestor.  In a<unk> , each node with descendants represents the most recent common ancestor of the descendants, and the edge lengths in some<unk> s correspond to time estimates. Each node is called a taxonomic unit. Internal nodes are generally called hypothetical taxonomic units (HTUs) as they cannot be directly observed.
Phylogenetic tree
Molecular phylogeny
Classification template
Screening template
Crystal structure
Risk factor template
Kick chart
Shotgun sequencing