DAVID NICHOLLS / SCIENCE PHOTO LIBRARY DAVID NICHOLLS / SCIENCE PHOTO LIBRARY
DNA fingerprint. Conceptual computer artwork of a DNA (deoxyribonucleic acid) double helix and a human fingerprint, representing the technique of DNA fingerprinting. The spiralling strands of the DNA helix are composed of organic molecules known as nucleotides. Complementary pairing between nucleotides on opposite strands of the helix (bars) holds the structure together. The sequence of nucleotides along the DNA helix specifies the production of proteins. DNA fingerprinting is a diagnostic technique used to identify individuals from their DNA. It involves the examination of regions of DNA known to be unique for each person.
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