Image Gallery

    Search Tips

Photos > Graphics > DNA (Deoxyribonucleic Acid)

DNA (Deoxyribonucleic Acid)

DNA is the chemical name for the molecule that carries genetic instructions in all living things. The DNA molecule consists of two strands that wind around one another to form a shape known as a double helix. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups. Attached to each sugar is one of four bases--adenine (A), cytosine (C), guanine (G), and thymine (T). The two strands are held together by bonds between the bases; adenine bonds with thymine, and cytosine bonds with guanine. The sequence of the bases along the backbones serves as instructions for assembling protein and RNA molecules.

Date:June 12, 2010
Credit:Darryl Leja, NHGRI
Dimensions:1933 x 1347
File Size:698 Kb
Rights:PublicExcept where otherwise noted, this image is in the public domain and may be used, linked or reproduced without permission. If you use an image, please credit the source listed above with a link back to www.genome.gov where possible. Thank you!



About the Image Gallery