What is DNA, Genetics Science Learning Center
http://learn.genetics.utah.edu/content/basics/oldtour/
Build a DNA Molecule
http://learn.genetics.utah.edu/content/basics/builddna/
What Makes a Firefly Glow
http://learn.genetics.utah.edu/content/basics/firefly/
PBS: Journey into DNA
http://www.pbs.org/wgbh/nova/genome/dna.html
Click and Clone
DNA Fingerprinting
Learn genetics
Electrophoresis