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  •  Read the following statements: 1. RNA can mutate at a faster rate than DNA 2. DNA chemically is less reactive and structurally more stable when compared to RNA 3. 2'-

 Read the following statements:
1. RNA can mutate at a faster rate than DNA
2. DNA chemically is less reactive and structurally more stable when compared to RNA
3. 2'-OH group present at every nucleotide in RNA is a reactive group makes RNA labile and easily degradable
4. RNA can mutate to form DNA
5. DNA being chemically less reactive is appropriate to act as genetic material of viruses
Select the correct option:
 

Option: 1

1, 2, 3 and 4
 


Option: 2

1, 2, 3 and 5
 


Option: 3

1, 2 and 3
 


Option: 4

All of these
 


Answers (1)

best_answer

 

 

As we have already discussed in Properties of Genetic Material -

 

Both DNA and RNA are able to mutate. In fact, RNA being unstable mutates at a faster rate. Consequently, viruses having RNA genome and having a shorter life span mutate and evolve faster. Further, 2'-OH group present at every nucleotide in RNA is a reactive group and makes RNA labile and easily degradable. RNA is also now known to be catalytic, hence reactive. Therefore, DNA chemically is less reactive and structurally more stable when compared to RNA. Therefore, among the two nucleic acids, the DNA is a better genetic material.
Hence, the correct option is (c).

Posted by

Divya Prakash Singh

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