Question

which is a frameshift mutation?
○ substitution
○ nonsense
○ silent
○ deletion

Explanation:

Frameshift mutations occur when nucleotides are inserted or deleted, altering the reading frame. Substitution (replaces one nucleotide), nonsense (creates a stop codon), and silent (no amino acid change) mutations do not shift the frame. Deletion of nucleotides can cause a frameshift.

Answer:

deletion