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Gel Electrophoresis
* Technique used to separate samples of DNA, RNA, and protein
according to charge and/or size
* Smaller molecules move farther and faster through the
agarose gel
* Opposite charges
each other
* DNA products run from the cathode to the anode
* Using GE, one can compare sizes of DNA fragments, and
possibly compare/find similarities between different strands
of DNA
* Helps us separate many different pieces of DNA and RNA
* Discover new species
* Can help find a culprit in a crime
* Gel electrophoresis used for analytical
purposes- gives us a general picture
* More specific= RFLP, PCR, DNA sequencing,
Southern blotting
* These methods help look at specific fragments
* May lead to manipulating a gene => making
new proteins => eg. make oil, transform a
bacteria which can be used to eliminate a
disease 
* Innovative ideas- do science at home
* Think outside the textbook realm
* Molecular biology = very important for new
* Fame
* $$
* Save the planet
* We are looking for innovative ideas that will
use molecular biology and make something new
and cool!
* Join iGem club at your future school
* iGem for high school= in the making
* Check for us online
* In separating DNA by Gel, why is size and not charge
important in analyzing the results?
* Proteins: Why do they have to be denatured before running
Gel? (HINT* Think structures!)
* Why is a buffer necessary for Gel Electrophoresis? (*Think of
the definition of a buffer, and keep in mind the charges)
* We can’t see DNA, RNA, or proteins like we can see food
colouring. How do we visualize the separation patterns in
our samples?
Happy Summer !