There are different types of genetic influences on people's risk of developing Alzheimer's disease. Douglas Galasko, MD, of the UCSD Shiley-Marcos Alzheimer’s Disease Research Center joins William Mobley, MD, PhD to discuss these genes, how they are being studied, and what being a carrier of Alzheimer's associated genes means. Learn more about penetrance and expressivity, genome-wide association studies, and more. Series: "Brain Channel" [Health and Medicine] [Show ID: 33725]