Partially Denaturing a Stretch of Duplex in Closed, Circular Plasmid

question 40

Multiple Choice

Partially denaturing a stretch of duplex in closed, circular plasmid DNA will have what effect?

• A) It will decrease linking number and increase writhe.
• B) It will decrease twist and linking number.
• C) It will increase writhe and decrease twist.
• D) It will decrease both writhe and twist.
• E) It will increase linking number and reduce writhe.

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Definitions:

1-butanamine

A chemical compound, also known as butylamine, which is an amine with the formula CH3(CH2)3NH2, used in the manufacture of pharmaceuticals and pesticides.

IUPAC Name

The systematic name given to a chemical substance, based on a set of standard rules by the International Union of Pure and Applied Chemistry.

Amine

An organic compound derived from ammonia; characterized by the presence of a nitrogen atom bonded to carbon atoms.

Boiling Point

The specific temperature at which a liquid changes to gas at a given pressure, indicative of a substance's volatility.