MedlinePlus website for genes provides definition of Gene Therapy, Genetic basics, FAQs, Genomics and personalized medicine plan, epigenomics, pharmacogenomics, proteomics. Read: What Is A Gene? (written for kids, from Nemours Foundation, kidshealth.org) See article on genetic ancestry testing for those interested in family history and genealogy. Genetic factors reportedly play a role in nine of the ten leading causes of death in the United States. Learn about the Human Genome Project and more