This program looks first at the structure of DNA before going on to describe how DNA carries out its 4 major functions: storing information; replicating information; creating slight changes in the information through mutations that forces of natural selection act upon; and translating information into the proteins that define an individual. During this discussion students are introduced to point mutations; insertions and deletions; the genetic code; transfer, messenger, and ribosomal RNA; and the process of replication and translation. 2005.