DNA, or deoxyribonucleic acid, is used in the human body in order for an organism to reproduce, develop and survive as well as in science for genetic engineering, forensics, bioinformatics, evolutionary history and information storage. A human's DNA code contains about 3 billion bases and 20,000 genes in 23 pairs of chromosomes.
DNA contains the genetic instructions for all living organisms and is used in science and technology. DNA is utilized in genetic engineering for medical and agricultural research. Forensic scientists use DNA to determine and identify individuals whose hair, blood or saliva is associated with a crime. Other uses are being experimented with such as transferring digital data into DNA for information storage.