MEHAU KULYK / SCIENCE PHOTO LIBRARY MEHAU KULYK / SCIENCE PHOTO LIBRARY
Genetic code. Conceptual computer artwork of a DNA double helix (centre left), a woman's face and binary code, representing a genetic code. Letters that represent the nucleotide bases of DNA (deoxyribonucleic acid) are seen on the cross-linking units connecting the helical strands. Their sequence makes up the genetic code, the instructions which control and transmit an organism's hereditary traits. There are four types of base: adenine (A), guanine (G), cytosine (C) and thymine (T). In the background, a binary code (using the numbers 0 and 1) represents another information-coding method.
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