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44.4 MB (3.3 MB compressed)
4436 x 3496 pixels
37.6 x 29.7 cm ⏐ 14.8 x 11.7 in (300dpi)
ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
DNA molecule, computer artwork. DNA (deoxyribonucleic acid) forms a shape called a double helix, which is like a twisted ladder. The uprights of the ladder (white) are sugar-phosphate backbones, and the rungs (coloured) are paired nucleotide bases. The bases come in 4 varieties, adenine, guanine, thymine and cytosine. The order of the base pairs is a code which carries the body's genetic information in sections called genes.
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