58.1 MB (755.3 KB compressed)
4500 x 4514 pixels
38.1 x 38.1 cm ⏐ 15.0 x 15.0 in (300dpi)
FRIEDRICH SAURER / SCIENCE PHOTO LIBRARY FRIEDRICH SAURER / SCIENCE PHOTO LIBRARY
DNA molecule shadow, computer artwork. DNA (deoxyribonucleic acid) is composed of two strands twisted into a double helix. Each strand consists of a sugar-phosphate backbone attached to nucleotide bases (lines between backbones). 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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