- A transgenic organism has had its genotype altered producing a new strain of organism.
- These are also known as genetically modified organisms.
- Bacteria are readily introduced into plants.
- Certain species naturally attack damaged plants and cause the plant cells to multiply and cause a tumour.
- The bacteria do this by inserting genes form their own plasmids into one of the plant's chromosomes.
- The plasmid gene links with the DNA of the plant but stimulates the growth of a tumour.
- Scientists can replace the tumour-forming genes in the bacterial plasmids with useful genes.
- Examples of GM foods:
- Soya beans (plants modified to be resistant to wee killers)
- Tomatoes (enzyme that causes outside of tomato to go soft due to the break down of the pectin in the cell walls is blocked. Tomatoes have a longer shelf life and better taste)
Potential Benefits of…