SciShow
Why Humans May Actually Be Fish
Is there a chance that more species may actually be closer to fish than we originally thought?
Bozeman Science
Comparing DNA Sequences
Paul Andersen shows you how to compare DNA sequences to understand evolutionary relationships. He starts with a brief introduction to cladograms and evolutionary relationships. He shows you how to classify DNA relationships using a...
Bozeman Science
Cladograms
Paul Andersen shows you how to construct a cladogram from a group of organisms using shared characteristics. He also discusses the process of parsimony in cladogram construction. He then explains how modern cladograms are constructed and...
Bozeman Science
Phylogenetics
Paul Andersen discusses the specifics of phylogenetics. The evolutionary relationships of organisms are discovered through both morphological and molecular data. A specific type of phylogenetic tree, the cladogram, is also covered.
Curated Video
Interpreting a Cladogram
“Interpreting a Cladogram” will define and explain how to read a cladogram so that the student can tell how closely living things are related.
Professor Dave Explains
Cladistics Part 2: Monophyly, Paraphyly, and Polyphyly
Now that we know how to construct cladograms, we have to learn some new terminology. These are the terms monophyly, paraphyly, and polyphyly, and they help us distinguish between any old taxon and true clades. Let's learn more about...
Professor Dave Explains
Cladistics Part 1: Constructing Cladograms
Before we dive into learning about all the different kinds of animals, we have a little bit of work to do. How do we describe the relationships between animals? How does phylogeny work? We have to learn about cladistics, which means we...
Professor Dave Explains
Major Divisions of Kingdom Animalia and the Problem With Animal Phyla
Soon we are going to dive into a study of all the different kinds of animals, but first we need some kind of road map. What are all the major divisions of Kingdom Animalia? Below kingdom is phylum, so how many animal phyla are there, and...
Khan Academy
Khan Academy: Evolution: How Do We Know Which Kinds of Dinosaurs Were Most Close
Understanding questions of dinosaur behavior and biology depends on a firm understanding of their evolutionary relationships. [1:13]