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DNA extraction experiment

DNA extraction experiment

C024/0361

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50.3 MB (50.0 MB compressed)

5133 x 3423 pixels

43.4 x 29.0 cm ⏐ 17.1 x 11.4 in (300dpi)

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Credit

LAWRENCE LAWRY / SCIENCE PHOTO LIBRARY LAWRENCE LAWRY / SCIENCE PHOTO LIBRARY

Caption

DNA extraction experiment. Teenage boy at home with the apparatus and chemicals used to extract DNA (deoxyribonucleic acid), in this case from a banana. The banana is cut up and mashed with the knife and fork, and then placed in a beaker with warm water added. Washing detergent is added to break the cell membranes. The mixture is then kept warm for 12 minutes, then placed in an ice bath for 5 minutes. After filtering, the liquid is pipetted into a test tube and salt and chilled isopropyl alcohol (in bowl, lower right) is added. This precipitates the DNA. More chilling in ice (10 minutes) produces a visible mass of stringy DNA.

Release details

Model release available. Property release not required.

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