A mutation changes a DNA sequence from:
AATGGCTTACGA
To
AATTGGCTTACGA
Which the following will result?
A)a substitution mutation
B)an addition mutation
C)a deletion mutation
D)a frame shift
E)both an addition mutation and a frameshift

Question

Quizplus · Accepted Answer

The mutation adds an extra "T" to the sequence, making it an addition mutation. Since the DNA sequence is read in groups of three nucleotides (codons) during translation, adding a nucleotide shifts the reading frame of the entire sequence that follows the mutation, causing a frameshift.

A Mutation Changes a DNA Sequence From