DNA-Supercoiling Occurs Because of the Following Phenomena

question 23

Multiple Choice

DNA-supercoiling occurs because of the following phenomena:
I. Topoisomerases either add to or subtract from DNA-twists.
II. Helicases cause strain when separating the two DNA-single strands that form a DNA double-helix.
III. DNA-double strands are densely packed within chromosomes. Therefore, the twist imposed on one DNA-double strand can cause cooperative supercoiling of the neighboring strands.
IV. RNA-polymerases, the group of enzymes responsible for RNA-transcription can cause supercoiling.

• A) I and II
• B) II and III
• C) I, II, and IV
• D) all of the above

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Definitions:

Earnings Ratio

A ratio that compares different types of earnings or income, often used for analyses like gender wage gaps or industry comparisons.

Earnings Ratio

A financial metric that compares a company's earnings to another value, such as the price of its stock or the earnings of another industry.

Labor Force Participation

The percentage of the population that is working or actively looking for work, excluding those not seeking employment.

Earnings Difference

The disparity in income earned between different individuals, occupations, or time periods.