Question:
Assertion (A): RNA is unstable and can mutate at a faster rate.
Reason (R): The presence of 2’-OH group in every nucleotide of RNA makes it labile and easily degradable.
Assertion (A): RNA is unstable and can mutate at a faster rate.
Reason (R): The presence of 2’-OH group in every nucleotide of RNA makes it labile and easily degradable.
Reason (R): The presence of 2’-OH group in every nucleotide of RNA makes it labile and easily degradable.
Show Hint
RNA Instability and Mutation Rate
Updated On: Jan 13, 2026
- Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
- Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
- Assertion (A) is true, but Reason (R) is false.
- Assertion (A) is false, but Reason (R) is true.
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Assertion (A): RNA is indeed more unstable compared to DNA due to the 2’-OH group in its sugar molecule, which makes it more prone to hydrolysis and degradation.
Reason (R): The presence of the 2’-OH group in RNA makes it more reactive, contributing to its instability and higher mutation rate
Reason (R): The presence of the 2’-OH group in RNA makes it more reactive, contributing to its instability and higher mutation rate
Was this answer helpful?
0
0
Top CBSE CLASS XII Biology Questions
- All algae have
- With a neat, labelled diagram, describe the parts of a typical angiosperm ovule.
- With a neat diagram explain the 7-celled, 8-nucleate nature of the female gametophyte
- Draw a labeled diagram of male reproductive system.
- Draw a labeled diagram of female reproductive system.
View More Questions
Top CBSE CLASS XII Molecular Biology Questions
- In molecular biology, who proposed that genetic information flows in one direction?
- Study the diagram given below and answer the questions that follows:
(b) Identify the labels P and Q.
(c) Write the nature of histone proteins.
(d) Distinguish between Euchromatin and Heterochromatin. - The histone core in a nucleosome of chromatin thread is a/an:
- During the process of transcription, after binding to a promoter, RNA polymerase catalyses and makes the bases in the template strand of DNA available for base pairing, with the bases of:
- What would happen if a gene encoding a polypeptide of 50 amino acids, $25^th$ Codon (UAU) is mutated to “UAA”?
View More Questions
Top CBSE CLASS XII Questions
- 2, b, c are in A.P. and the range of determinant $\begin{vmatrix}1&1&1\\ 2&b&c\\ 4&b^{2}&c^{2}\end{vmatrix}$ is [2, 16]. Then find range of c is
- A boy of mass 50 kg is standing at one end of a, boat of length 9 m and mass 400 kg. He runs to the other, end. The distance through which the centre of mass of the boat boy system moves is
- A capillary tube of radius r is dipped inside a large vessel of water. The mass of water raised above water level is M. If the radius of capillary is doubled, the mass of water inside capillary will be
- A circular disc is rotating about its own axis. An external opposing torque 0.02 Nm is applied on the disc by which it comes rest in 5 seconds. The initial angular momentum of disc is
- A circular disc is rotating about its own axis at uniform angular velocity \(\omega.\) The disc is subjected to uniform angular retardation by which its angular velocity is decreased to \(\frac {\omega}{2}\) during 120 rotations. The number of rotations further made by it before coming to rest is
View More Questions