What kind of mutation causes a shift in the way a ribosome will read the mRna

For the answer to the question above asking w hat kind of mutation causes a shift in the way, a ribosome will read the mRNA? I think this question is referring to Synonymous Mutation. Synonymous mutations can affect transcription, splicing, mRNA transport, and translation, any of which could alter phenotype, rendering the synonymous mutation non-silent.

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What kind of mutation causes a shift in the way a ribosome will read the mRna

Synonymous Mutation