The Linking Number (Lk) of a Closed-Circular, Double-Stranded DNA Molecule

question 53

Multiple Choice

The linking number (Lk) of a closed-circular, double-stranded DNA molecule is changed by:

• A) breaking a strand, then rejoining it.
• B) breaking a strand, unwinding or rewinding the DNA, then rejoining it.
• C) breaking all hydrogen bonds in the DNA.
• D) supercoiling without the breaking of any phosphodiester bonds.
• E) underwinding without the breaking of any phosphodiester bonds.

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Definitions:

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Marketing Strategies

Comprehensive plans formulated to achieve specific marketing goals and objectives through the effective use of the marketing mix.

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