genetic engineering

• Genetic engineering is the transfer of genetic information from one cell to another.
• stage 1: identify section of DNA that contains required gene from source chromosome
• stage 2: Extract the required gene.
• stage 3: Extract the plasmid from the bacterial cell.
• stage 4: insert the required gene into the bacterial plasmid.
• stage 5: Insert the plasmid into the host bacterial cell.
• stage 6: The bacterial cell reproduces producing the required protein.
• examples of useful products made by genetic engineering are:

  • insulin - used to treat people who have diabetes;
  • human growth hormone - used to treat some growth disorders.