More information on biotechnology basics
There are a number of web sites that cover the basics of biotechnology and gene technology.
CSIRO Biotechnology http://www.csiro.au/science/Biotechnology.html
An animated primer on the basics of DNA, genes and heredity, from the Dolan DNA Learning Center, Cold Spring Harbour Laboratory, USA http://vector.cshl.org/dnaftb/
The biotechnology section of the web site of the US National Museum of Health http://www.accessexcellence.org/AB/
DNA – Genes and things, from the Eureka! Science site; recommended by the US National Science Teachers Association http://www.eurekascience.com/ICanDoThat/dna_genes.htm
DNA and biotechnology, from the web site of The Tech Museum of Innovation in San Jose, USA http://www.thetech.org/genetics/