Virus

Episode 4: Viral Genes

January 22, 1960 • 29 min

Presents an analysis of bacteriophages and how they may change. Explains why bacterial viruses are useful to scientists studying different life forms. Uses diagrams and animation to show how bacteria reproduce within a cell and how mutations of these viruses can be identified. Describes the "copy errors" responsible for mutation, and the ways in which cross-breeding among viruses takes place.