Imagine a gel through which DNA fragments have moved in res…

Biology Biotechnology Principles and Processes All Topic Question For Revision Test Single Correct MCQ

Published on: August 14, 2026

Imagine a gel through which DNA fragments have moved in response to an applied electrical current. The “well”) represents band on this gel that is farthest from the top (that is, from the place where the DNA fragments were added to the

shortest fragments of DNA.

longest fragments of DNA.

restriction enzyme used to cut the DNA into fragments.

ligase used bind the DNA fragments together.

Text Solution

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The correct answer is:

In gel electrophoresis:

• DNA fragments move from the well (top) toward the positive electrode.

• Smaller (shortest) DNA fragments move faster and travel farthest through the gel.

• Larger fragments move slowly and remain closer to the wells.

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