JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY
DNA sequencing preparation. Female technician using a multiple syringe to prepare samples for DNA sequencing. This is being done for the human genome project, which aims to sequence all human genes. The red liquid in these syringes is a dye used to ensure the technique works properly. Genes are lengths of DNA (deoxyribonucleic acid) which perform specific tasks within an organism. Human DNA contains over 100,000 genes, comprising over 3 billion base pairs. When complete, the human genome map will allow for improved drug design and a greater understanding of genetic diseases. Photographed at the Sanger Centre, in Cambridge, England.
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