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Crick here briefly touched on the skepticism his theory of DNA and of the genetic code continued to encounter among some researchers in the early 1960s, as well as on his realization that the genetic code contained ancillary features from previous stages of evolution that might yield clues to how life developed on earth.
Original Repository:
The Wellcome Library for the History and Understanding of Medicine. Francis Harry Compton Crick Papers
Location:
Box: 12. Folder: PP/CRI/D/1/2/5
Rights:
Reproduced with permission of the Wellcome Library for the History and Understanding of Medicine. and http://library.wellcome.ac.uk/
Original Repository. Wellcome Library for the History and Understanding of Medicine. Francis Harry Compton Crick Papers. 11646. URL. http://archives.wellcome.ac.uk/