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This session centers on
gel electrophoresis,
offering a structured look at
the fundamentals of
gel electrophoresis,
including how this method
separates DNA, RNA,
and proteins by size and charge,
using either agarose or
polyacrylamide gels.
We will discuss proper
sample preparation,
loading techniques,
and the importance
of optimizing run conditions.
The lecture will also cover
methods for visualizing
separated molecules and
interpreting results
in various applications
like genotyping,
PCR verification, and
protein analysis.
Finally, we will emphasize
why gel electrophoresis remains
essential in research and
diagnostics despite
certain limitations.
In this lecture, we'll explore
the essential technique
of gel electrophoresis,
a cornerstone of
molecular biology.
Gel electrophoresis separates
molecules such as DNA,
RNA or proteins by
size and charge,
using a gel matrix under
an electric field.
The two principal gels are
agarose and polyacrylamide.
Agarose gels are typically
used for larger nucleic acids,
while polyacrylamide gels offer
finer resolution for proteins
and smaller nucleic acids.
Effective gel
electrophoresis begins
with proper sample preparation.
DNA or RNA samples
are mixed with
a loading buffer containing
dies and density agents,
ensuring the sample
settles into the well.
For proteins, samples
are treated with
detergents like SDS
and reducing agents,
