First slide

The DNA

Question

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

Easy

A

2.3 × 10⁴
B

4.6 × 10⁴
C

1.2 × 10⁶
D

Zero

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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