In the lower half of the interactive, change the template DNA strand such that the sequence …AACCTG… is changed to …AACTTG…
Which of the terms correctly describes this type of mutation?

a) substitution
b) insertion
c) duplication
d) deletion

If this mutation occurred in a protein‑coding gene, how would it be classified?

a) silent mutation
b) missense mutation
c) nonsense mutation
d) frameshift mutation