DNA from the Beginning - An animated primer on the basics of DNA, genes, and heredity. The National Human Genome Research Institute - US government site discusses research, grants, health, policy, and ethics of genetics. DNA Learning Center - The world's first science center devoted entirely to genetics education. Anthracycline Intercalation - Details of anticancer anthracycline intercalated as DNA hexamer, illustrated from 3-D x-ray crystal images by Dr J.P. Miller at UMIST, Manchester, UK. BioServers - Contains user-friendly tools to launch DNA database searches, statistical analyses, and population modeling from a centralized workspace. Dervan's Group - Sequence-specific recognition of DNA using high affinity synthetic molecules, for the regulation of gene expression, at California Institute of Technology, Pasadena. Double helix: 50 years of DNA - Articles, photos, and interviews from the journal "Nature" presented in celebration of the 50th anniversary of the description of the structure of DNA. Wikipedia: Exon - Article on regions in genes that are expressed in mature mRNA and in proteins. Wikipedia: Noncoding DNA - Article on the sections of DNA that do not contain codes for polypeptide sequences. GenBank - A database of nucleotide sequences maintained by the US National Center for Biology Information. Includes news, search functions and methods for submitting sequences. What is DNA - Provides an introduction to DNA, its chemical structure, information about cloning, natural function, applications, studies and tests.