If you don’t know your alleles from your enzymes or your RNA from your DNA, you’ll want to check out “GENOME: The Secret of How Life Works” at the SMITHSONIAN INSTITUTION in Washington, D.C. The new exhibit takes an in-depth look at human genes, explaining through interactive exhibits and family friendly activities exactly what these small wonders are and what they do. The exhibit, which marks the 50th anniversary of the modeling of the DNA double-helix structure, is on view at the Smithsonian through January 4, and then travels to major science centers around the country. (202) 357-2700,