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Question

The given figure shows the structure of nucleosome with their parts labelled as A, B & C. Identify A, B and C.

A
A – DNA; B – H1 histone; C – Histone octamer
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B
A – H1 histone; B – DNA; C – Histone octamer
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C
A – Histone octamer; B – RNA; C – H1 histone
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D
A – RNA; B – H1 histone; C – Histone octamer
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Solution

The correct option is A A – DNA; B – H1 histone; C – Histone octamer
Nucleosome is a structural unit of a eukaryotic chromosome which consists of a length of DNA coiled around a core of histones. In the given figure of nucleosome structure, the parts marked as A, B and C are respectively DNA, H1 histones and histone octamer.

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