Francis Crick
emjohnson | July 25, 2009On July 25, 1920 the English biophysicist Rosalind Franklin was born. She was instrumental in discovering the molecular structure of DNA, though her vital contributions were only posthumously acknowledged. After receiving her PhD from Cambridge in 1945 she worked as a research associate for John Randall at King's College in London. Beginning in early 1951 she took X-ray diffraction photographs of DNA that showed a helical form of the molecule, a finding confirmed by James Watson and Francis Crick who subsequently won the Nobel Prize for their DNA research. In lecture notes dated November…