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When the negatively charged DNA combines with the positively charged histone octamer, which of the following is formed?

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in Biology – Class 12 by (271k points)
When the negatively charged DNA combines with the positively charged histone octamer, which of the following is formed?

(a) Nucleus

(b) Nucleoid

(c) Nucleosome

(d) Nucleosome

This question was addressed to me in an online interview.

This intriguing question originated from Packaging of DNA Helix topic in division Molecular Basis of Inheritance of Biology – Class 12

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The correct answer is (c) Nucleosome

Easy explanation: Nucleosomes are the bead-like structures which are present on the strands of chromatin. These nucleosomes are formed when the DNA combines with the histone octamer. Less than 2 DNA turns can be seen which are wound around the octameric protein (Histones).

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