Finally one should add that in spite of the great complexity of protein synthesis and in spite of the considerable technical difficulties in synthesizing polynucleotides with defined sequences it is not unreasonable to hope that all these points will be clarified in the near future, and that the genetic code will be completely established on a sound experimental basis within a few years.
Francis CrickIt now seems certain that the amino acid sequence of any protein is determined by the sequence of bases in some region of a particular nucleic acid molecule.
Francis CrickFor simplicity one can think of the + class as having one extra base at some point or other in the genetic message and the - class as having one too few.
Francis CrickThe dangerous man is the one who has only one idea, because then he'll fight and die for it.
Francis Crick