LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
DNA. Computer model of a molecule of the nucleic acid DNA (deoxyribonucleic acid). DNA contains and transmits the genetic code. It contains the instructions that control the growth and development of an organism. It is found in cell nuclei. It consists of two strands of sugar- phosphates that form a spiralling double helix shape. The strands are linked by nucleotide bases. Atoms (spheres) are colour-coded: carbon (grey), nitrogen (dark blue), oxygen (red), phosphorus (orange). Hydrogen atoms are not shown.
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