Ch a p te r 8 ge ne expre s s ion: the flow of ge ne tic informa tion from dna to rna to p rote in. This chapter describes how the information in dna is converted into usable machinery (proteins) in the cell via the processes of transcription and translation. This flow of information is part of the central dogma of genetics. You need to become very comfortable with using the terms transcription and translation accurately. In transcription, dna information is converted into rna information. In translation, rna information is converted into protein information. Work on developing some mental pictures for yourself so you can see the process occurring when you speak the words. The three letter dna code and the correspondence between dna sequence and protein sequence is described in this chapter. Tie together your knowledge of transcription/translation and the genetic code.