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DNA Fingerprinting

Gel Electrophoresis

What is DNA?
What is DNA Fingerprinting?
Types of DNA Fingerprinting
How does one create a DNA fingerprint?
The Uses of DNA Fingerprinting
Problems with DNA Fingerprinting
Gel Electrophoresis

Gel Electrophoresis
This is a process where the DNA is sorted.  The sample of DNA is poured into a gel, such as agarose.  A charge is then applied to the gel with a charge on both ends.  The charges are opposites, positive on the bottom and a negative charge on the top.  The DNA has a very small negative charge on it which causes it to move to the bottom.  The larger pieces can not move as fast so the smaller pieces move to the bottom and the larger pieces are stuck nearest to the top.




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