66.1 MB (11.1 MB compressed)
4078 x 5669 pixels
34.5 x 48.0 cm ⏐ 13.6 x 18.9 in (300dpi)
VICTOR DE SCHWANBERG / SCIENCE PHOTO LIBRARY VICTOR DE SCHWANBERG / SCIENCE PHOTO LIBRARY
DNA molecule in a petri dish, computer artwork. DNA (deoxyribonucleic acid) forms a shape called a double helix, which is like a twisted ladder. The uprights of the ladder are sugar-phosphate backbones, and the rungs 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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