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Select an incorrect statement...

Select an incorrect statement

A

both the nucleic acids (DNA and RNA) have the ability to direct their duplications

B

proteins have no ability to direct their duplications

C

DNA chemically is less reactive and structurally more stable when compared to RNA

D

2'-OH group present at every nucleotide in DNA is a unreactive group and makes DNA stable

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question of selecting an incorrect statement regarding nucleic acids, we will analyze each statement step by step. ### Step-by-Step Solution: 1. **Understanding the Question**: - We need to identify which of the provided statements about nucleic acids (DNA and RNA) is incorrect. 2. **Analyzing the First Statement**: - **Statement**: Both nucleic acids, DNA or RNA, have the ability to direct their duplication. - **Analysis**: This statement is true. Both DNA and RNA can direct their own replication through the action of specific enzymes (DNA polymerases for DNA and RNA polymerases for RNA). 3. **Analyzing the Second Statement**: - **Statement**: Proteins have no ability to direct their duplication. - **Analysis**: This statement is also true. Proteins are synthesized based on the information encoded in DNA and mRNA, but they do not have the ability to replicate themselves. 4. **Analyzing the Third Statement**: - **Statement**: DNA chemically is less reactive and structurally more stable compared to RNA. - **Analysis**: This statement is correct. DNA is indeed less reactive due to its double-stranded structure and the absence of a hydroxyl group at the 2' position, making it more stable than RNA. 5. **Analyzing the Fourth Statement**: - **Statement**: The 2'-OH group present in DNA is an unreactive group and makes DNA stable. - **Analysis**: This statement is incorrect. DNA does not contain a 2'-OH group; it has a 2'-H (hydrogen) instead, which contributes to its stability. The presence of the 2'-OH group is characteristic of RNA, making RNA more reactive and less stable compared to DNA. 6. **Conclusion**: - The incorrect statement is the fourth one. Thus, the answer to the question is the fourth statement. ### Final Answer: The incorrect statement is: "The 2'-OH group present in DNA is an unreactive group and makes DNA stable." ---
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