65.4 MB (1.9 MB compressed)
5079 x 4500 pixels
42.9 x 38.1 cm ⏐ 16.9 x 15.0 in (300dpi)
FRIEDRICH SAURER / SCIENCE PHOTO LIBRARY FRIEDRICH SAURER / SCIENCE PHOTO LIBRARY
DNA molecules, computer artwork. DNA (deoxyribonucleic acid) is composed of two strands twisted into a double helix. Each strand consists of a sugar-phosphate backbone (silver) attached to nucleotide bases (yellow, blue, green and red). There are four different bases: guanine, cytosine, thymine and adenine. DNA contains sections called genes, which encode the body's genetic information.
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