EQUINOX GRAPHICS / SCIENCE PHOTO LIBRARY EQUINOX GRAPHICS / SCIENCE PHOTO LIBRARY
Genetic code, conceptual computer artwork. DNA is composed of two strands twisted into a double helix. Each strand consists of an outer sugar-phosphate backbone (blue) with nucleotide bases attached (multicoloured, upper right). There are four bases: adenine (A), thymine (T), guanine (G) and cytosine (C). The sequence of these bases, seen in white letters at lower left, forms the genetic code. This code determines each cell's structure, function and behaviour.
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