What is the difference between a population, community and ecosystem and species? What defines different populations of the same species? What factors lead to separate populations? In this program explains that members of the same species that interbreed are considered a population and that a population share the same gene pool. This video answers these questions and explore why evolution occurs in populations.

Originally released by Mazzarella Media, 2015. Streaming video file encoded with permission for digital streaming by Infobase on July 16, 2018.

What is a Population? (3:44); .