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Published on 04 Feb 2013 | over 3 years ago

PhET Simulation

Gene Machine: The Lac Operon
phet.colorado.edu/en/simulation/gene-machine-lac-operon



In this video Paul Andersen describes the elements of an operon. The promoter allows the RNA polymerase to transcribe the required genes. The operator and repressor regulate the expression of the genes by blocking the RNA polymerase. The genes for a specific task are all located in sequence so that they can all be transcribed at once. He starts be describing how the lac operon can be initiated to break down lactose. He then explains how the trp operon can be activated to create tryptophan. He ends with a simulation of the lac operon.

Intro Music Atribution
Title: I4dsong_loop_main.wav
Artist: CosmicD
Link to sound: www.freesound.org/people/CosmicD/sounds/72556/
Creative Commons Atribution License

All images are either Public Domain or Creative Commons Attribution Licenses:

"File:André Lwoff Nobel.jpg." Wikipedia, the Free Encyclopedia. Accessed February 4, 2013. en.wikipedia.org/wiki/File:Andr%C3%A9_Lwoff_nobel.jpg .
kumar35885. Simple DNA for Illustrations, n.d. openclipart.org/detail/58543/dna-by-kumar35885 .
"File:François Jacob Nobel.jpg." Wikipedia, the Free Encyclopedia. Accessed February 4, 2013. en.wikipedia.org/wiki/File:Fran%C3%A7ois_Jacob_nobel.jpg .
"File:Jacques Monod Nobel.jpg." Wikipedia, the Free Encyclopedia. Accessed February 4, 2013. en.wikipedia.org/wiki/File:Jacques_Monod_nobel.jpg .
"Gene Machine: The Lac Operon." PhET. Accessed February 4, 2013. phet.colorado.edu/en/simulation/gene-machine-lac-operon .

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