This is a clip from a PBS production called "DNA: The Secret of Life."

It details the latest research (as of 2005) concerning the process of DNA replication.

Google search the PBS title and you can find the website which has links to many informative sites and interesting clips.  This is just a segment detailing replication.

A Windfall Films Production for Thirteen/WNET New York in association with Channel Four.
© 2003 Educational Broadcasting Corporation.