Nucleosomes are bounded by

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(D) nucleosome is the basic structural unit of eukaryotic chromatin. It consists of a segment of $DNA$ wound around a core of eight histone proteins (

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$DNA$

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(D) nucleosome is the basic structural unit of eukaryotic chromatin. It consists of a segment of $DNA$ wound around a core of eight histone proteins (an octamer). The $DNA$ molecule wraps around the histone octamer,which is composed of two copies each of histones $H_2A, H_2B, H_3,$ and $H_4$. Therefore,the nucleosome is essentially a structure where $DNA$ is bounded or wrapped around the histone core.

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