Mutations in tRNA genes can create tRNAs that recognize stop codons. Because stop codons are sometimes called nonsense codons, the types of mutations that affect tRNAs are called nonsense suppressors. For example, a normal tRNA<,lv has an anticodon sequence CCU that recognizes a glycine codon in mRNA (GGA) and puts in a glycine during translation. However, a mutation in the gene that encodes tRNAGly could change the anticodon to ACU. This mutant tRNA(,l> would still carry glycine, but it would recognize the stop codon UGA. Would this mutation affect attenuation of the trp operon? Explain why or why not. Note: To answer this question, you need to look carefully at Figure 14.12 and see if you can identify any stop codons that may exist beyond the UGA stop codon that is found after region 1.