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Cover Biochemistry

Genetic Information  

This chapter describes all living organisms as information-processing systems. Their ultimate source of information is encoded in the nucleotide base sequence of DNA. As biochemists have searched ever more deeply into the mysteries of genetic information storage and transmission, how DNA is replicated, and gene expression is controlled, they have transformed all of the life sciences. The chapter cites the knowledge and technologies that were acquired during this pursuit and that have provided an understanding of the intricacies of living processes that is still unfolding. It also reviews the instructions required to produce a certain type of organization that must be stably stored to safeguard their accuracy and availability for use. Information must also be converted into a form that can be utilized.