A mutant bacterial cell has a defective aminoacyl-tRNA synthetase that attaches a lysine to tRNAs with the anticodon AAA instead of the normal phenylalanine.What would be a potential consequence for a cell in which this happens? Remember that phenylalanine may be encoded by multiple codons.

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The defective aminoacyl-tRNA synthetase will attach lysine instead of phenylalanine to tRNAs with the anticodon AAA. This means that proteins in the cell will include lysine instead of phenylalanine at amino acid positions specified by the codon UUU, which is one of the codons that specifies phenylalanine. Other codons, such as UUC, will still specify phenylalanine. Therefore, some proteins in the cell may have the correct sequence of amino acids, while others may have lysine substituted for phenylalanine.

A Mutant Bacterial Cell Has a Defective Aminoacyl-TRNA Synthetase That