Evolution: Course Preview

Tree of Life

This video was developed for Week 1 of the AMNH online course Evolution, part of Seminars on Science, a program of online graduate-level professional development courses for K-12 educators. Explore more sample resources...


Cladograms, or tree-of-life diagrams, show the evolutionary relationships among species. This video shows the different ways scientists have represented cladograms visually, from traditional line diagrams to circular diagrams to 3-D representations that can show the evolutionary relationships between thousands of species at one time.