DNA is fundamental to the biology of all life on Earth, but how many of us actually know what it is or what it's made of?

At King's College in London, Rosalind Franklin and Maurice Wilkins were studying DNA. Wilkins and Franklin used X-ray diffraction as their main tool -- beaming X-rays through the molecule yielded ...

Without the scientific foundation provided by these pioneers, Watson and Crick may never have reached their groundbreaking conclusion of 1953: that the DNA molecule ... of the three major ...

DNA, or deoxyribonucleic acid, is the hereditary material found in nearly all living organisms. It carries the genetic instructions for the development, functioning, growth, and reproduction of all ...

Interestingly, this base substitution is not the only difference between DNA and RNA. A second major difference ... poly-A tail is added to the 3' end of the mRNA molecule (Figure 7).