A 28-year-old Indian male presents with progressive muscle weakness, ptosis, and diplopia over 3 months. Serum creatine kinase is mildly elevated at 450 U/L. Genetic testing reveals a heterozygous mutation in the DARS2 gene (aspartyl-tRNA synthetase 2, mitochondrial). Brain MRI shows bilateral symmetric T2 hyperintensities in the basal ganglia. Which of the following best explains the primary molecular defect in this patient's condition?
Which of the following is the correct sequence of events during the elongation phase of translation in prokaryotes?
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