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Chapter 24: Q6CP (page 847)

Why is it necessary for naturally occurring DNA molecules to be negatively supercoiled?

Short Answer

Expert verified

The negative supercoiling prepares the molecule for the molecules that need separation of the DNA strands.

Step by step solution

01

DNA

DNA constitutes a group of molecules that is responsible for transferring genetic materials from the parents to the offspring. This is correct for viruses as several of the entities contain DNA or RNA as the genetic material.

02

The reason why the naturally occurring DNA molecules are negatively supercoiled

Negative supercoiling is the left handed coiling of DNA that makes the winding occur in the anticlockwise direction. It is necessary that the naturally occurring DNA molecules are negatively supercoiled as the negative supercoiling prepares the molecule for the molecules that need separation of the DNA strands.

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Most popular questions from this chapter

Explain why dimeric or multidomain proteins can bind to DNA with very high specificity.

Describe the methods for visualizing DNA molecules after separation.

What properties allow RNA molecules to act as catalysts?

For the RNA sequence AUUGGCAUCCGAUAA, draw the secondary structure that maximizes its base pairing.

Which fractionation procedures separate nucleic acids according to their binding affinity? According to their size?
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