TEK IMAGE / SCIENCE PHOTO LIBRARY TEK IMAGE / SCIENCE PHOTO LIBRARY
DNA autoradiogram in a petri dish surrounded by glassware. An autoradiogram is produced during DNA (deoxyribonucleic acid) analysis. The bands (black) of the autoradiogram correspond to the four nucleotide bases which make up a genetic sequence. Every individual, with the exception of identical twins, has a different genetic sequence. DNA analysis is used in forensic science, medicine and paternity studies.
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