Question

practice it!
which of the following statements about frameshift mutations are correct?
select the correct answer(s).
frameshift mutations can result in a completely different amino acid sequence after the mutation.
frameshift mutations occur when bases are added or removed from the dna sequence.
frameshift mutations only occur when entire codons are added or removed.
frameshift mutations change how the dna sequence is read in groups of three.
frameshift mutations often produce nonfunctional proteins.

Explanation:

• Frameshift mutations occur when nucleotides (not entire codons) are inserted or deleted, shifting the reading frame. This leads to a completely different amino - acid sequence after the mutation site.
• Since the reading frame is shifted (groups of three nucleotides are read differently), the resulting protein is often non - functional.

Answer:

Frameshift mutations can result in a completely different amino acid sequence after the mutation. Frameshift mutations often produce nonfunctional proteins.