Why Does Frameshift Mutation Occur?

Frameshift mutations arise when the normal sequence of codons is disrupted by the insertion or deletion of one or more nucleotides, provided that the number of nucleotides added or removed is not a multiple of three.

What are two causes of frameshift mutations?

Frameshift mutation are caused by the addition or subtraction of nucleotides from the DNA sequence. Because the genetic code is read in triplets, addition or subtraction of 1 or 2 nucleotides causes a shift in the reading frame.

What is the function of frameshift mutation?

Frameshift mutations are the result of insertions or deletions that alter the reading frame of the triplet codons, thereby altering translation and altering the structure and function of the protein product.