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Biology, 25.02.2020 16:57 hannahkharel2
While the introduction of the mutant synthetase gene restored some of the growth characteristics, this strain still does not grow as fast as wild-type E. coli. Which of the statements support this observation?
A) The mutant synthetase gene allows histidine tRNA to be charged with asparagine, but sometimes this tRNA could deliver asparagine in the place of histidine to other proteins where the histidine residue was important to the function of the protein and growth. B) The mutant synthetase gene allows histidine tRNA to be charged with asparagine, therefore histidine could not be present in any protein. If the the histidine residue was important to the function of various other proteins growth may not be completely restored. C) The codon for histidine has not changed in the mutant variant, therefore only the mutant variant of the protein is produced resulting in slow growth. D) The normal synthetase that charges histidine tRNA with histidine is still present resulting in the mutant variant of the protein. Not having enough of the normal protein may still limit growth.
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