I post some videos explaining:

Fingerprinting

http://www.5min.com/Video/DNA-Fingerprinting-151426157

Electrophoresis

http://www.5min.com/Video/Electrophoresis-Separating-DNA-151426125

Finally, here is a link which contain a “game” that ask questions about electrophoresis

http://biog-101-104.bio.cornell.edu/biog101_104/tutorials/recomb_DNA/recDNA_q8_fs.html

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