Question:
Which one of the following is NOT needed to construct solenoid fibre?
Which one of the following is NOT needed to construct solenoid fibre?
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Solenoid fibres are formed by the packaging of DNA into nucleosomes, which are made up of histone proteins. RNA does not directly participate in this structure.
Updated On: Mar 28, 2026
- Nucleosome
- DNA molecule
- RNA molecule
- Basic proteins histones
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the construction of solenoid fibre.
The solenoid fibre is a higher-order structure of chromatin. It is primarily composed of nucleosomes, DNA molecules, and histones. RNA molecules are not directly involved in the construction of solenoid fibres.
Step 2: Analyzing the options.
(A) Nucleosome: Incorrect. Nucleosomes are essential for the formation of solenoid fibres.
(B) DNA molecule: Incorrect. DNA is a critical component in the construction of solenoid fibres.
(C) RNA molecule: Correct. RNA molecules are not directly involved in the construction of solenoid fibres.
(D) Basic proteins histones: Incorrect. Histones are essential for the packaging of DNA into nucleosomes, which form solenoid fibres.
Step 3: Conclusion.
The correct answer is (C) RNA molecule, as RNA is not needed for the construction of solenoid fibres.
The solenoid fibre is a higher-order structure of chromatin. It is primarily composed of nucleosomes, DNA molecules, and histones. RNA molecules are not directly involved in the construction of solenoid fibres.
Step 2: Analyzing the options.
(A) Nucleosome: Incorrect. Nucleosomes are essential for the formation of solenoid fibres.
(B) DNA molecule: Incorrect. DNA is a critical component in the construction of solenoid fibres.
(C) RNA molecule: Correct. RNA molecules are not directly involved in the construction of solenoid fibres.
(D) Basic proteins histones: Incorrect. Histones are essential for the packaging of DNA into nucleosomes, which form solenoid fibres.
Step 3: Conclusion.
The correct answer is (C) RNA molecule, as RNA is not needed for the construction of solenoid fibres.
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