DNA

Happy birthday to the late Rosalind Franklin, the world-renowned chemist best known for her role in the discovery of the structure of DNA. Earning her Ph.D. in chemistry from Cambridge University where she specialized in X-ray diffraction, the method by which the DNA structure was identified. At King's College in London, Franklin and student made a discovery while taking photos of DNA fibers: a dry "A" form and a wet "B" form. One photo, Photograph 51, would later become famous for identifying the "B" form of DNA and served as the basis of further DNA structure research.