1.5 Genetic Engineering

Question 1

What are the stages of genetic engineering?

Answer 1

• Identify the required gene from a source chromosome
• Extract the required gene using a special enzyme
• Find a plasmid from a bacterium
• Open the plasmid using the same special enzyme
• Seal the gene into the plasmid using a different special enzyme
• Insert the modified plasmid into the host bacterial cell
• Multiply the modified bacterium
• Purify and extract the desired chemical

Question 2

What is genetic engineering used for?

Answer 2

Production of insulin and human growth hormone, and altering animals and plants

Question 3

What are some examples of genetically engineered crops?

Answer 3

• GM apples with lomger shelf lives
• GM strawberries which make antifreeze
• GM peas which make insecticide