A double-stranded fragment of viral DNA, one of whose strands is shown below, encodes two polypeptides called vir-1 and vir-2. Adding this double stranded DNA fragment to an in vitro transcription and translation system yields peptides of 10 residues (vir-1) and 5 residues (vir-2). 5′-AGATCGGATGCTCAACTATATGTGATTAACAGAGCCTGCGGCATAAACT-3′ (a) What are the nucleotide […]