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  • 03-02-2018
  • Biology
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What could lead you to conclude that the lac operon is on?

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Diatonic254
Diatonic254 Diatonic254
  • 13-02-2018
The X-gal medium is suitable for detection of gene regulation of the lack operon gene. The media turns from white to blue in the presence of beta-galactosidase, a gene product of lacZ. Beta-galactosidase cleaves lactose into galactose and glucose. Utilisation of lactose as an energy source by Escherichia occurs when there shortage of glucose in the environment.
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