Phylogenetic Tree Maker

A phylogenetic tree is a branching diagram of evolutionary relationships. It traces how a set of species or taxa descend from common ancestors over time. The tips of the tree are the taxa being compared, internal nodes are the points where lineages diverged, and the branches connecting them represent evolutionary change. Groups that share a common ancestor form clades. SciFig's phylogenetic tree maker turns these elements into a clean, accurate evolutionary tree you can label and export.

Read a phylogenetic tree from the root toward the tips, following branches forward in time. The root represents the most recent common ancestor of every taxon on the tree, and each internal node marks where one lineage split into two. Taxa connected through a more recent shared node are more closely related than taxa that only meet at a deeper node. Branch lengths, when drawn to scale, indicate the amount of evolutionary change. A phylogenetic tree diagram made with SciFig keeps these relationships visually clear for any reader.

A node is a single point on the phylogenetic tree where a lineage diverges into two or more descendant branches — it represents a common ancestor. A clade is a complete group: an ancestral node plus every descendant taxon that branches off from it, forming a monophyletic group. Put simply, a node is one branching event, while a clade is the whole sub-tree it gives rise to. SciFig's phylogenetic tree maker lets you highlight and label individual clades so reviewers can see each evolutionary group at a glance.

A rooted phylogenetic tree has a defined starting point — the root — representing the common ancestor of all taxa, so it shows a clear direction of evolutionary time from ancestor to descendants. An unrooted phylogenetic tree only shows the relatedness among taxa without specifying which ancestor came first, so it conveys relationships but not direction. Researchers root a tree using an outgroup or a molecular clock. With SciFig's phylogenetic tree maker you can generate either a rooted or an unrooted evolutionary tree from the same set of taxa.

With SciFig's phylogenetic tree maker, you describe the taxa you want to compare and the layout you need — rooted, unrooted, or circular, with or without branch lengths — and the AI produces an accurate evolutionary tree instantly. You can then relabel each taxon at the tips, adjust branch positions, highlight clades, and export the finished phylogenetic tree diagram as a high-resolution image for a manuscript, lecture slide, or biology worksheet. No tree-drawing software or scripting is required.

A cladogram shows only the branching pattern of shared ancestry — the order in which clades split — without representing the amount of evolutionary change, so its branch lengths carry no meaning. A phylogenetic tree (or phylogram) adds that information: branch lengths are proportional to evolutionary distance or time. In other words, every cladogram is a simplified phylogenetic tree diagram, but a true phylogenetic tree encodes more. SciFig works as both a cladogram maker and a full phylogenetic tree maker, so you can choose whichever evolutionary tree style your audience needs. As an evolutionary tree maker for systematics, this evolutionary tree maker keeps branch topology valid so common ancestors and clades read correctly.