Curated OER
Biotechnology
The metaphors used here to describe the "cut and paste" procedures for genetic engineering will really help your biologists in their understanding of restriction enzymes and DNA. The uses of genes that are isolated and incorporated into...
Biology Pages
Kimball's Biology Pages: Restriction Enzymes
This site is a retired biology professor's explanation of restriction enzymes. Good visual showing examples of how enzymes cut DNA to produce blunt or sticky ends.