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Complete the sentences. Each term may be used more than once.
In a circular bacterial chromosome, the structure of DNA is a_______ double helix.
If DNA is twisted in the_________ direction, it becomes overwound.
Overwinding results in_______ supercoiling.
If DNA is twisted in the_________ direction, it becomes underwound.
Underwinding results in_________ supercoiling.
One effect of_________ supercoiling in bacterial chromosomes is to promote separation of the two strands of DNA in the double helix.
positive negative left-handed right-handed

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Answer:

Right handed,right handed,positive,left handed, negative,negative

Explanation:

In a circular bacterial chromosome the structure of DNA is a right handed double helix.

if DNA is twisted in the right handed direction,it becomes overwound. overwinding results in positive supercoiling.

If the DNA is twisted in the left handed direction it becomes underwound. Underwinding result negative supercoiling.

one effect of negative supercoiling in bacterial chromosome is to promote separation of the two strands of DNA in the double helix.

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