DNA sequencing

DNA sequencing

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Credit: BSIP, PIKO/SCIENCE PHOTO LIBRARY

Caption: MODEL RELEASED. DNA sequencing. Male technician studying the banded DNA sequences or genetic fingerprints of an autoradiogram. The pattern of bands represents the chemical sequence that forms the genetic code for a section of DNA (deoxyribonucleic acid). The DNA sample was cut into fragments by an enzyme and marked with radioactive tags. These fragments were then placed in a gel and separated by electrophoresis, the application of an electric charge. An autoradio- gram of the resulting bands of radioactively- tagged DNA was made by placing a radiographic film on the gel. DNA sequencing is used in forensic science, medical research and genealogy.

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Keywords: autoradiogram, autoradiograph, bases, biochemistry, biology, biotechnology, code, deoxyribonucleic acid, dna research, dna sequencing, face mask, genetic fingerprinting, geneticist, genetics, genome, genomics, gloved, latex gloves, male, man, nucleotides, protective clothing, researcher, rubber, scientist, sequence, sterile, technician

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