Cladogram Maker

What is a Cladogram?

A cladogram is a branching diagram that shows the evolutionary relationships between organisms based on shared derived characteristics (synapomorphies). Developed from the principles of cladistics — a classification method introduced by entomologist Willi Hennig in the 1950s — cladograms organize organisms into nested groups called clades, where each clade shares a common ancestor.

Unlike other tree diagrams, cladogram branch lengths carry no information — only the branching pattern matters. Each branching point (node) represents a hypothetical common ancestor, and the traits that define each split are labeled along the branches.

Key elements of a cladogram

• Taxa (tips) — the organisms or groups being compared, placed at branch endpoints
• Nodes — branching points representing common ancestors
• Synapomorphies — shared derived traits that define each clade
• Outgroup — a reference organism outside the group being studied, used to root the tree
• Clades — groups that include an ancestor and all its descendants

Cladograms are essential in biology education for teaching evolutionary classification, understanding how organisms are related, and distinguishing between ancestral and derived traits.

MyMap's AI generates accurate cladograms from a list of organisms — with branching points, shared traits, and proper cladistic structure — ready for biology coursework or research.