This program shows the structure and replicating processes of DNA and the effect of genetic mutation; demonstrates the Lederberg Experiment; and recapitulates the evidence provided by fossils and structural and biological homologies that the process of adaptation and the selection of adaptors rests on a wide range of genetic variability. After viewing the program, students should have a general understanding of the general structure and functioning of DNA and of the Lederberg Experiment and its significance, and should be familiar with the range and types of evidence for evolution presented in the review section.

Encoded with permission for digital streaming by Films Media Group on Sept. 19, 2005. Films on Demand is distributed by Films Media Group for Films for the Humanities & Sciences, Cambridge Educational, Meridian Education, and Shopware.

Structure of DNA (3:25) -- DNA Determines Characteristics (2:50) -- DNA: Changes and Mutations (3:03) -- Lederberg Experiment (7:09) -- Evidence for Evolution (3:06).