DNA fragments in gel stained with Ethidium Bromide

DNA fragments in gel stained with Ethidium Bromide

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Credit: KLAUS GULDBRANDSEN/SCIENCE PHOTO LIBRARY

Caption: DNA fingerprints. DNA (DeoxyriboNucleic Acid) fra- gments stained with ethidium bromide and visualised by Ultra-Violet (UV) light. DNA fragments are seen as bright "bands" within light smears. DNA samples containing many different sized fragments can be separated by size on an agarose gel by electrophoresis. When an electric current is applied, smaller fragments move faster through the gel. Individual "lanes" of the gel will contain one or more "bands" of different sized fragments from the original sample. Such gel electrophoresis is commonly used in experiments such as DNA finger- printing or during the cloning of human genes.

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Keywords: agarose gel, agarose gel electrophoresis, biochemistry, biotechnology, dna, dna ethidium sta, dna lab, dna mapping, dna research, dna stain, double helix, electrophoresis, electrophoresis gel, ethidium bromide, ethidium dna stain, fluorescence, genetic, genetics, laboratory, uv light

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