A description of how the triple-helix DNA model was a precursor to the accepted double-helix model of our DNA. [0:27]

Test your knowledge of the history of DNA and the discovery of the double helix model in this twenty-question trivia quiz.

Investigate how the genetic code on a DNA strands controls what protein is produced with this collection of animations and 3D models. Explore an interactive 3D model of the double helix, watch an animation of transcription, and see the...

Students reinforce their knowledge that DNA is the genetic material for all living things by modeling it using toothpicks and gumdrops that represent the four biochemicals (adenine, thiamine, guanine, and cytosine) that pair with each...

Illustration of a classic double-helix model of DNA.

[Free Registration/Login may be required to access all resource tools.] DNA is located in the nucleus. Proteins are made on ribosomes in the cytoplasm. Remember that information in a gene is converted into mRNA, which carries the...

A 3D computer generated model of humans DNA structure. The double helix image labels base pairs, diameter, major and minor grooves.