Cold Spring Harbor Laboratory
Dolan Dna Learning Center: Dna Transformation, Part 2
Animated slide show illustrating Morton Mandel and Akiko Higa's calcium chloride method of DNA transformation.
Cold Spring Harbor Laboratory
Dolan Dna Learning Center: Dna Transformation
Through animated images, follow the experiment which created the first custom-made organism containing recombinant DNA.
Khan Academy
Khan Academy: The Trp Operon
Learn how the trp repressor controls gene expression. Find out about feedback inhibition and attenuation.