DNA helix

DNA helix

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Credit: LAWRENCE LAWRY/SCIENCE PHOTO LIBRARY

Caption: DNA helix. Hand holding a model of a double helix of DNA (deoxyribonucleic acid), which is formed of spiralling paired strands of sugar phosphates that are linked by nucleotide base pairs. There are four bases: adenine, thymine, guanine & cytosine (coloured links) that when paired form struts, as on a ladder. The arrangement of the bases along a helix of DNA is the genetic code for protein synthesis and the functioning & growth of every living organism. DNA is found in cell nuclei.

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Keywords: base pairs, bases, biochemical, biochemistry, biology, complementary pairing, deoxyribonucleic acid, dna, double helix, genetic, genetics, hand, hereditary, heredity, holding, model, molecular, molecule, molecules, nucleotide, nucleotides, paired, phosphates, spiral, strand, strands, structural, structure, sugar phosphate

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