Mutations That Involve Changes at Specific Sites in a Gene

Question

Mutations that involve changes at specific sites in a gene are referred to as:
A) Frameshift mutations
B) Nonsense mutations
C) Misssense mutations
D) Point mutations
E) None of these

Accepted Answer

Point mutations involve changes at specific sites in a gene, which can include substitutions, insertions, or deletions of a single nucleotide. Frameshift mutations involve the insertion or deletion of one or more nucleotides that affect the reading frame of the entire gene, while nonsense mutations result in the formation of a premature stop codon that truncates the protein prematurely. Missense mutations involve a single nucleotide change that results in a different amino acid being incorporated into the protein, which may or may not affect its function.