The structural unit formed by tight coiling of DNA around the histone octamer is called the .

nucleoid

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nucleosome

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nuclein

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nucleolus

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Solution

The correct option is B nucleosome
DNA is tightly wrapped around the histone octamer to form a structure known as the nucleosome. It is this compact packaging that ultimately helps the 2.2m long DNA molecule fit itself inside the tiny nucleus of a cell.

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The structural unit formed by tight coiling of DNA around the histone octamer is called the ________________.

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