Official websites use .gov A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
In his letter Klug gave electron density calculations derived from experiments with synthetic DNA made of one chain consisting of a sequence of only adenine bases, called poly-A, plus the complementary second chain. Despite Crick's earlier skepticism, research with simple, repeating synthetic sequences of DNA and RNA consisting of just one base yielded many important experimental results in deciphering the genetic code.
Original Repository:
The Wellcome Library for the History and Understanding of Medicine. Francis Harry Compton Crick Papers
Original Repository. Wellcome Library for the History and Understanding of Medicine. Francis Harry Compton Crick Papers. 11646. URL. http://archives.wellcome.ac.uk/