NEET 2023
- Exam
- NEET
- Year
- 2023
- Subject
- Zoology
- Chapter
- Molecular Basis of Inheritance
NEET 2023 · Zoology · Molecular Basis of Inheritance
Given below are two statements: Statement I: RNA mutates at a...
Given below are two statements:
Statement I: RNA mutates at a faster rate.
Statement II: Viruses having RNA genome and shorter life span mutate and evolve faster.
In the light of the above statements, choose the correct answer from the options given below:
Options
- AStatement I is false but Statement II is true.
- BBoth Statement I and Statement II are true.
- CBoth Statement I and Statement II are false.
- DStatement I is true but Statement II is false.
Correct answer
B. Both Statement I and Statement II are true.
Step-by-step solution
RNA contains
- A ribose sugar
- A phosphate group
- Purines (like A and G) and pyrimidines (like C and U).
Being unstable, which is due to the hydroxyl group present at the 2'-carbon of the ribose, RNA mutates faster than DNA. That is also the reason that viruses having RNA genome and shorter life span mutate and evolve faster.