MEHAU KULYK / SCIENCE PHOTO LIBRARY MEHAU KULYK / SCIENCE PHOTO LIBRARY
DNA helix and autoradiogram. Conceptual computer artwork of a DNA (deoxyribonucleic acid) helix (red) surrounding a genetic autoradiogram (yellow with red bands). The process of producing autoradiograms is know as genetic fingerprinting. As no two individuals' DNA are the same, this technique can be used to determine whether two people are related, or who committed a crime when there is little other evidence.
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