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Q.

How many nucleosomes are present in Escherichia coli if its DNA has 4.6 × 106 bp?

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a

2.3 × 104

b

4.6 × 104

c

1.2 × 106

d

Zero

answer is D.

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Detailed Solution

The negatively charged DNA is wrapped around the positively charged histone octamer to form a structure called nucleosome. Nucleosome is found only in eukaryotes. Therefore, no nucleosome is found in E.coli.

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How many nucleosomes are present in Escherichia coli if its DNA has 4.6 × 106 bp?