A scientist loading DNA samples.
© Science Museum / Science & Society Picture Library
A scientist at the Medical Research Council in Cambridge loads an automated slide procesor with microarray DNA samples, which are used to analyse DNA expresion levels. The Human Genome Project is expected to produce a sequence of DNA representing the evolutionary history of the human species. In April 2003 international scientists working on the project announced that the decoding of the genome is virtually complete, two years ahead of time. Identifying genes can now be done in days instead of years, with huge potential scientific and medical benefits.