1. A Science Odyssey: DNA Workshop: Replication
   Within the nucleus of every cell are long strings of DNA, the code that holds all the information needed to make and control every cell within a living organism...
   http: //pbs.org/wgbh/aso/tryit/dna/replication....
   
   
2. GenScope-Genetics from DNA to Populations
   GenScope is a learning environment that uses the computer to provide an alternative to text-based science education.
   http: //concord.org/genscope/