With regards to Franklin and DNA: the credit went to Watson and Crick because they had the fundamental insight: that DNA is an antiparallel double helix (Franklin knew it was a helix, but not an antiparallel double helix, which is key to the function of DNA). That data was shared in a departmental seminar. Further, she is explicitly acknowledged in W&C '53, and further, is the author of the paper immediately following W&C. She was never qualified to win the prize.