In the Holliday Model for Recombination, Which Is Not True

question 16

Multiple Choice

In the Holliday model for recombination, which is not true?

• A) One of two recombination products are formed depending on how the branch is cleaved.
• B) Strand exchange leads to an intermediate structure with crossed single strands.
• C) Two homologous duplexes are aligned.
• D) The branch can move along the strands leading to additional strand exchange.
• E) The strand exchange is initiated by DNase I nicking.

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Definitions:

Crystal Form

The external shape displayed by a crystal or a mineral, determined by the internal arrangement of its atoms or molecules.

Cleavage

1. The tendency of minerals to break along specific orientations of closely spaced planes. 2. The tendency of a rock, especially a metamorphic rock, to split along mostly parallel planes.

Luster

The reflection of light from the surface of a mineral, especially its quality and intensity; the appearance of a mineral in reflected light.

Color

A property of light as seen by people, typically defined by its wavelength or frequency.