Recombinant-DNA

Genetic Engineering is the manipulation of an organism's DNA to achieve desired traits or characteristics. This technology has applications across various fields including medicine, agriculture, industry, and environmental science.

Medicine
- Recombinant Insulin: Produced using genetically modified bacteria.
- Gene Therapy Products: Treatments that involve repairing or replacing faulty genes related to diseases.
Agriculture
- Bt Corn: Genetically modified to express a bacterial toxin that protects against pests.
- Golden Rice: Enhanced with vitamin A to combat deficiency.
Industry
- Modified Yeast and Bacteria: Used in biofuel production and pharmaceuticals.
- Cyanobacteria: Engineered to produce biodegradable plastics.
Environmental Science
- Bioremediation Organisms: Modified microbes used to clean up environmental pollutants.
- Disease-resistant Plants: Engineered to reduce pesticide use and improve yields.

Insulin was traditionally extracted from animal sources, which had potential risks of allergic reactions and supply issues.
Recombinant DNA technology was employed, where a gene coding for human insulin was inserted into a plasmid (a small circular DNA) in E. coli bacteria.
The bacteria then produce insulin that can be harvested and purified.

Safety: Reduced risk of allergic reactions.
Cost-effectiveness: Bacteria can be cultured in large quantities, making insulin production cheaper and more efficient.
Accessibility: Ensures a reliable supply for diabetic patients.

Ethical Concerns: Genetic modification raises questions about safety and long-term effects on health.
Resistance Issues: Some patients might develop antibodies against the insulin produced this way.
Dependency on Technology: Increased reliance on biotechnology firms for medication supply.