LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Genetic engineering. Computer artwork representing genetic engineering showing a molecule of DNA (deoxyribonucleic acid) being cut by a pair of scissors. The scissors represent an enzyme which is used to cut DNA. A DNA section (at centre left) will be added in its place. DNA contains the inherited instructions necessary for the development of a living organism. It consists of two helical strands joined by bases (blue bars) which form the genetic code. Here, a new section of DNA, perhaps a gene coding for a hormone such as insulin, is being spliced into the DNA. Genes such as this are needed to treat people who lack them through a process called gene therapy.
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