DNA molecule segment is : TTACGCAAG. The mutated DNA segment is TTACGCAAC. This is an example of ________ mutation.
Options
A
Insertion
B
Substitution
C
Inversion
D
Translocation
Answer & Analysis
Answer
B
Analysis
The correct answer is: B.Substitution
Explanation:
1.Original sequence: TTACGCAAG
2.Mutated sequence: TTACGCAAC
Looking closely, the only change in the sequence is that the last G in the original sequence is replaced with a C. This is a substitution mutation, where one base is swapped for another.
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