You Have Isolated What Appears to Be Alien DNA

question 3

Multiple Choice

You have isolated what appears to be alien DNA. While studying its replication, you performed the exact experiment Meselson and Stahl did. After three generations, the DNA is subjected to a CsCl gradient and only one band appears. What type of replication does this DNA undergo?

• A) Semiconservative
• B) Conservative
• C) Dispersive

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Definitions:

Mass

A property of a physical body which determines the body's resistance to being accelerated by a force and the strength of its mutual gravitational attraction with other bodies.

Fragments

Smaller parts or pieces that have broken off or been separated from something whole.

Density

The mass per unit volume of a substance, indicating how compact or sparse the substance is.

Displace

To move or force something/someone away from their usual or original position.