Question

question 8 of 10
during dna replication, an extra cytosine base is added to the dna. what
type of mutation is this?
a. silent mutation
b. point mutation
c. nondisjunction mutation
d. frameshift mutation

Explanation:

A frameshift mutation occurs when nucleotides (like adding an extra cytosine) are inserted or deleted, shifting the reading frame. Silent mutation doesn't change protein. Point mutation is a single - base substitution. Nondisjunction is about chromosome separation. So adding a base (insertion) causes frameshift.

Answer:

D. Frameshift mutation