Systematics of the Genetic Code and Anticode: History, Supersymmetry,   Degeneracy and Periodicity
  Important aspects of the process of information storage and retrieval in DNA and RNA, and its evolution, are the role of the anticodons and associated $t$RNA's, and correlations between anticodons and amino acids; the degeneracy of the genetic code, and the periodicity of many amino acid physico-chemical properties. Such factors are analysed in the context of a $sl(6/1)$ supersymmetric model of the genetic code. 
P.D. Jarvis and J.D. Bashford