53.6 MB (1.3 MB compressed)
5000 x 3750 pixels
42.4 x 31.8 cm ⏐ 16.7 x 12.5 in (300dpi)
ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
DNA molecule, computer artwork. DNA (deoxyribonucleic acid) is composed of two strands twisted into a double helix. Each strand consists of a sugar-phosphate backbone (represented by red spheres) attached to nucleotide bases (represented by blue spheres). 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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