MODEL RELEASED. DNA extraction experiment. Teenage boy using a pipette to add chilled isopropyl alcohol to a sample as part of a home experiment to extract DNA (deoxyribonucleic acid),in this case from a banana. The banana is cut up and mashed,and then placed in a beaker with warm water added. Washing detergent is added to break the cell membranes. The mixture is 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 added (as shown). This precipitates the DNA. More chilling in ice (10 minutes) produces a visible mass of stringy DNA | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Lawry, Lawrence |
Bildgröße: | 5148 px × 3436 px |
Modell-Rechte: | vorhanden |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |