Genetic Modification of Foodstuffs
Virtually every crop we eat have undergone hundreds of years of genetic modification by farmers and scientist in search of desirable traits. Selective breeding and hybrid strains have contributed immeasurably to farm productivity during this time. Over the past 30 years however, genetic engineering has been revolutionized. While before, a farmer wanting to develop a frost resistant tomato would be able to breed towards one only if the necessary genes were available somewhere in tomatoes or a near relative to tomatoes, modern biological engineering techniques overcome such restrictions. Genetic traits from outside a species’ gene pool, in the tomato’s case from an arctic fish, can be spliced into the organism to create an entirely different species, a transgenic organism with the typical traits of a tomato and frost resistance from a fish. The most widely used method of gene splicing, recombinant DNA, uses biochemical "scissors" called restriction enzymes to cut the strings of DNA, selecting required genes. These are then “ferried” by a virus or a bacterium that infects the host, smuggling the gene
into the plant's DNA. In this way scientists have been able to create slow ripening and seedless fruit, crops that grow in unfavourable conditions and are resistant to disease or herbicides and milk from cows given a genetically engineered growth hormone. Biotechnology has started to revolutionise food production, with fantastic results. With the world population of 6 billion expected to double in the next 50 years and an adequate food supply becoming a major challenge it will no doubt continue to do so in the future. Public reaction to the use of recombinant DNA in genetic engineering however has been mixed. Sliding US export commodities such as genetically modified soybeans and corn have highlighted hardened public opinion and widespread resistance to biotech crops, especially in the European Union. Concerns about GM foods fall into three categories: economics, environmental hazards and human health risks. The latter two have been the subject of hot debate, both in Australia and overseas.
Some topics in this essay:
Concerns GM,
Foodstuffs Virtually,
Swiss German,
So-called Bt,
recombinant dna,
genetically modified,
genetically engineered,
allergic reaction,
genetic modification,
genetic engineering,
brazil nuts,
gm foods,
human health,
food production,
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Approximate Word count = 776
Approximate Pages = 3 (250 words per page double spaced)
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