How are speciation and reproductive isolation related? This compelling and fastpaced educational video explores the roles of geographic isolation, reproductive isolation, and adaptation in the formation of new species.

Anole lizards of the Caribbean islands are members of about 150 closely related species, most of which evolved within the past 50 million years from a single colonizing species. See the evolutionary process firsthand with this compelling case study in evolution.

For more videos on speciation and the anole lizards, see our playlist at

   • Anole lizards and speciation  

See more HHMI BioInteractive short films and classroom resources here: http://www.hhmi.org/biointeractive/ex...