Evolution 101 is an in-depth, multi-part course that reviews evolutionary theory from basic definitions to details. It includes information on natural selection, genetic drift, mutations, phylogenetics, punctuated equilibrium, and much more! Be sure to check out the right-hand margin of all Evolution 101 pages for links to related lessons, readers, advanced materials, and other resources. You can explore the following sections:

An introduction to evolution Evolution briefly defined and explained The history of life: looking at the patterns How does evolution lead to the tree of life? Mechanisms: the processes of evolution How does evolution work? Microevolution How does evolution work on a small scale? Speciation What are species anyway, and how do new ones evolve? Macroevolution How does evolution work on a grand scale? The big issues What are some of the big questions that evolutionary biologists are trying to answer?