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Q.

What is the role of histones in the packaging of DNA in eukaryotic cells?

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a

Histones decrease the overall size of DNA molecules by breaking them into smaller fragments.

b

Histones repel the negatively charged DNA, leading to its expulsion from the nucleus.

c

Histones, being positively charged, interact with negatively charged DNA to form nucleosomes.

d

Histones add to the negative charge of DNA, preventing its packaging in the nucleus.

answer is C.

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Detailed Solution

Histones are rich in the basic amino acid residues lysine and arginine. Both the amino acid residues carry positive charges in their side chains.The negatively charged DNA is wrapped around the positively charged histone octamer to form a structure called nucleosome

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