Biology Biotechnology Principles and Processes All Topic Question For Revision Test Single Correct MCQ
Published on: August 11, 2026

In gel electrophorosis, at which end of the gel the sample is loaded?

A
In the wells &
B
Towards positive electrode
C
Towards negative electrode both

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The correct answer is:
D

In gel electrophoresis, DNA samples are loaded into wells located near the negative electrode (cathode) because DNA is negatively charged and moves toward the positive electrode (anode).

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