Q.what would happen if a genetic mutation changed a start codon to some other codon?
The messenger RNA transcribed from the mutant gene would be nonfunctional because ribosomes could not initiate translation correctly. ... An incoming tRNA molecule with the right amino acid moves into the A site on the ribosome.
The messenger RNA transcribed from the mutant gene would be nonfunctional because ribosomes could not initiate translation correctly. An incoming tRNA molecule with the right amino acid moves into the A site on the ribosome. In cases of start codon mutation, as usual, the mutated mRNA would be shunted to the ribosomes, but the translation would not take place. This is because an initiation codon is responsible for starting translation, not a transcription start codon.
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Answer:
The messenger RNA transcribed from the mutant gene would be nonfunctional because ribosomes could not initiate translation correctly. An incoming tRNA molecule with the right amino acid moves into the A site on the ribosome. In cases of start codon mutation, as usual, the mutated mRNA would be shunted to the ribosomes, but the translation would not take place. This is because an initiation codon is responsible for starting translation, not a transcription start codon.
Explanation:
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