49.8 MB (1.7 MB compressed)
3401 x 5120 pixels
28.7 x 43.4 cm ⏐ 11.3 x 17.1 in (300dpi)
LAWRENCE LAWRY / SCIENCE PHOTO LIBRARY LAWRENCE LAWRY / SCIENCE PHOTO LIBRARY
DNA molecule. Plastic molecular model showing the structure of DNA (deoxyribonucleic acid). DNA is composed of two strands twisted into a double helix. Each strand consists of a sugar-phosphate backbone (on outside of helix) attached to nucleotide bases (horizontal, between strands). There are four different bases: guanine, cytosine, thymine and adenine. DNA contains sections called genes, which encode the body's genetic information.
Model release not required. Property release not required.