The Genetic Code--Yesterday, Today, and Tomorrow

This is an historic occasion. There have been many meetings about the genetic code during the past ten or twelve years but this is the first impor-tant one to be held since the code became known. When I came to the States early in 1965 I brought w&h me tentative allocations for many of the 64 triplets. based mainly on the early work of Leder and Nirenberg, the results from the random poly-mers and the mutagenesis data. I telephoned Marshall Nirenberg, who told me of his latest allocations. A little later I saw Gobind Khorana and heard the first results he was getting using polymers with repeating sequences. I also visited George Streisinger and was told about the pre-liminary amino acid sequences due to a phase shift