Rosalind Franklin was a British scientist who lived in the 20th century. She is best known for her work on the structure of DNA. She used a technique called X-ray diffraction to take images of DNA and, through her images, demonstrated the presence of a double helix. Unfortunately, his images were shown to two men, scientists themselves, (Watson and Crick) without his consent, which allowed them to discover the structure of DNA before Franklin. It is important to note that Watson and Crick were both awarded the Nobel Prize in Physiology or Medicine in 1962 for their work on the structure of DNA, Franklin was not recognized for his contribution despite his role crucial in discovery.
She died at the age of 37 in 1958, without seeing her work recognized at its fair value.