DNA autoradiographs. Banded DNA sequences or genetic "fingerprints" overlapping on a computer screen. The bands represent the sequence of bases that form the genetic code in DNA (deoxyribonucleic acid) molecules. To make an autoradiograph a DNA sample is cut into fragments by an enzyme and marked with radioactive tags. The fragments are then placed in a gel and separated by electrophoresis,the application of an electric charge. Placing a radiographic film on the gel produces a radiograph of the resulting DNA bands,which can be analysed and compared for similarity to other DNA samples | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Tek Image |
Taille de l’image : | 3944 px × 3746 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |