Did you know that in 1953 scientists described the structure of DNA? All living organisms and some viruses have DNA. DNA is a molecule that contains a living organism’s biological blueprint or the instructions on how to build all the cells that make up that organism. In humans, all of your body’s cells except for red blood cells contain a copy of your DNA. The structure of DNA is a double helix. A helix is like a spiral or spring. A double helix are two spirals that are linked with each other, like a ladder that has been twisted.
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DNA stands for deoxyribonucleic acid.
DNA was first isolated by Johannes Fredrich Miescher in 1869.
The scientists that worked on identifying the structure of DNA are Francis Crick, James Watson, Rosalind Franklin, and Maurice Wilkins.
A human cell contains about 2 meters of DNA. There are about 3.2 billion bases in human DNA; DNA for other organisms vary in size.