Concept explainers
Is each of the following mutations a transition, transversion, addition, or deletion? The original DNA strand is
5′–GGACTAGATAC–3′
(Note: Only the coding DNA strand is shown.)
A. 5′–GAACTAGATAC–3′
B. 5′–GGACTAGAGAC–3′
C. 5′–GGACTAGTAC–3′
D. 5′–GGAGTAGATAC–3′
To review:
The kind of mutations that are present in DNA (deoxyribonucleic acid) sequences, while comparing the given sequence
A.
B.
C.
D.
Introduction:
Point mutations are a common type of mutation in which, a lone nucleotide in a DNA sequence undergoes change. There could be addition of a nucleotide, deletion of a nucleotide or conversion of one nucleotide into another (transition and transversion mutations).
Explanation of Solution
Mutation is defined as the occurrence of change in the genetic material of an organism, which generally is of permanent nature. Further, more the different types of mutations, which might have occurred in the mentioned parts have been described below:
A. When the given sequence is compared with the new sequence,
B. On comparing the given sequence to the new sequence,
C. When compared with the new sequence,
D. On comparing with the new sequence,
Therefore, it can be concluded that mutations in the given sequences when compared to the reference sequence are: transition, transversion, deletion and transversion, respectively.
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Chapter 19 Solutions
Genetics: Analysis and Principles
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