Changes a codon to a stop codon, truncating the protein Truncated proteins are usually nonfunctional and rapidly degraded.

Changes a codon so it encodes a different amino acid

Inserts a base, shifting the reading frame for all downstream codons

Changes a codon to a synonymous one, leaving protein unchanged

Changes a codon to a stop codon, truncating the protein

Mutations

AP Biology· difficulty 2/5

A nonsense mutation

Explanation

Truncated proteins are usually nonfunctional and rapidly degraded.

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