The Lac Operon

The Lac Operon - 

• Based around lactose
• Allows a specific gene to be switched on or off (expressed or not expressed)
• Induction = being able to turn an enzyme on and off 
• Lactose = inducer molecule
  • Disae molecule consists of galactose and glucose
• This process is also found in E-coli
• Transcription - being able to read the gene sent by mRNA
• Translation - changing information found in the gene and putting it in the form of an amino acid
• Transcription + Translation = Expression of a gene

The Lac Operon Contains...

1. I site - this is the regulatory gene and it makes the repressor proteins required. This gene is never switched off

2. P site - This is the promoter region. RNA polymerase…