Biology Biotechnology Principles and Processes Previous Year Questions Single Correct MCQ
Published on: August 12, 2026

Spooling is:

A
Cutting of separated DNA bands from the agarose gel
B
Transfer of separated DNA fragments to synthetic membranes
C
Collection of isolated DNA
D
Amplification of DNA

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The correct answer is:
C

During DNA extraction, the ethanol can be gently pushed down into the DNA solution by using a glass rod or wooden spooling stick. The charged DNA molecules move away from the ethanol and can be scooped up and swirled around a glass rod or wooden spooling stick. This is call DNA spooling. DNA spooling can isolate long strands of DNA from a solution.

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