Genetically
modified crops (GM crops, or biotech crops) are plants, the
DNA of
which has been modified using genetic engineering
techniques, to resist pests and agents causing harm to plants and to improve
the growth of these plants to assist in farmers efficiency.
Genetically
modified crops produce more food, but some worry it could upset delicate
ecosystems.
More
Food
Genetically modified foods
produce higher crop yields, and so some have proposed it as a solution to
solving hunger in developing countries. Also, although the seeds cost more up
front, the yield is so great that such crops are cheaper to produce in the long
run.
Reduced Need for Pesticides
Farmers do not need to use
as much pesticides and herbicides on the crops, thereby reducing harm to the
environment. They also decrease the amount of manpower needed to grow the
crops.
Better Food Quality
The food quality is better.
Genetic engineers can cause a fruit or vegetable to stay fresher for longer,
extending its shelf life. They can also be engineered to withstand years of
drought or other weather extremes while still providing a good crop yield.
Engineers can also add essential vitamins to the food that are lacking.
Disadvantages of GM crops
Destabilization
of Ecosystem
Genetically modifying foods
could harm other organisms and upset the balance in the ecosystem. If engineers
eliminate a pest from the crop, it could remove a food source for an animal.
The GM crops could also be toxic for organisms.
Creation of New Diseases
Some modification involves
bacteria and viruses, so some people worry that this engineering could create
new diseases. Also, pests could absorb the gene in the genetically modified
crop and become resistant to sprays and other means of eliminating them.
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