During the show, experts will explain how genetic testing  is done and how the results are used to help determine if someone is predisposed to developing cancer , Alzheimer’s , or other hereditary diseases .
Rudolph (Rudy) Tanzi, PhD  and David Altshuler, MD, PhD , both from Massachusetts General Hospital (MGH) , will participate in the discussion, as well as Dietrich Stephan, PhD  and Elissa Levin, MS, CGC,  from Navigenics™ .
NOVA scienceNOW is also inviting viewers to ask questions online . Questions will be collected until July 3, 2008, and then turned over to Rudy Tanzi. Tanzi, who is the director of the Genetics and Aging Research Unit at MGH and a professor of neurology at Harvard Medical School , will post his answers to selected questions on July 8, 2008.
To find out which channel in your area will broadcast the program, check the PBS Station Finder .
Source: NOVA scienceNOW – Personal DNA Testing