It's responsible for more than five percent of all cases of autism, and it's the most common cause of inherited mental retardation. But are we as familiar as we need to be with Fragile X syndrome, and a series of genetic conditions related to Fragile X? Host Dr. Mark Nolan Hill welcomes Dr. Randi Hagerman, professor and endowed chair of Fragile X research, and medical director of the Medical Investigation of Neurodevelopmental Disorders (MIND) Institute at the University of California, Davis School of Medicine, for a stimulating conversation about our rapidly expanding knowledge of these genetic conditions. How do the signs and symptoms manifest in children, and how does Fragile X impact our elder generations?