Question

What is one way that a frameshift mutation could occur? (1 point)
Responses

two nucleotides are substituted
two nucleotides are substituted

two nucleotides are deleted
two nucleotides are deleted

three nucleotides are inserted
three nucleotides are inserted

three nucleotides are deleted
three nucleotides are deleted
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Answer 1

A frameshift mutation can occur if there is an insertion or deletion of nucleotides that is not a multiple of three. Among the options provided, **two nucleotides are deleted** would lead to a frameshift mutation, as it changes the reading frame of the codons in the mRNA sequence.

So, the correct response is: **two nucleotides are deleted.**