Bill Nye examines the science of genetics, exploring the role DNA in heredity. The science guy uses models and graphics to identify the chemical structure of the DNA molecule and name its nucleic acids. Medical microscopy is used to demonstrate the process of mitosis and examine how chromosomes contain the genes that determine inherited traits. Also defines dominant and recessive genes and discusses genetic mutation.

Award-winning series explores the world of science and nature using humor, music, experiments, and interviews with scientists. DVD features fully indexed chapters correlated to National Science Standards, downloadable teacher's guide, interactive glossary and quiz, Internet links, and bonus materials.

1. Big idea -- 2. Way cool scientist : geneticist -- 3. Try this! : earlobes -- 4. Big demo : what makes DNA? -- 5. Music video.