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Genetic Engineering Free essay! Download now

Home > GCSE > Biology > Genetic Engineering

Genetic Engineering

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Downloads to date: N/A | Words: 584 | Submitted: 03-Jun-2011
Spelling accuracy: 96.9% | Number of pages: 2 | Filetype: Word .doc


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Genetic Engineering essay previewGenetic Engineering essay preview

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My essay is about genetic engineering. the essay is not very specific but it may be able to help an individual to understand what genetic engineering is

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A first introduction to genetic engineering
About genes
Genes are at the very heart of life. Together they constitute the blueprint of an organism. In computer terms they are the master program of life. They decide all the properties and all the capabilities of an organism.
In biological terms this master program is called the hereditary substance, the chromosomes. It is constituted by chains of so called DNA molecules that carry the "code words" or instructions of the master program.
There is an identical set of this master program in every cell. For example a corn plant has about a billion cells, each with a set of this master program. In different parts of the plants different parts of the program are active, giving rise to different structures like the leaves, the seeds and the root. The cell is like a huge computer network, much larger than any man-made one. Science has a very incomplete understanding how this billion of master programs is able to cooperate in a very harmoniously and effectively coordinated way.
Genetic engineering
Genetic engineering (also called gene modification) means manipulation of this master program. Genes, mostly from other, often totally unrelated species are inserted in the genetic "master program". Genes from e.g. fish, scorpions, bacteria and viruses have been inserted into food plants in genetic engineering projects.
Genetic engineering is based on an outdated theory proven to be wrong. It stated that one gene carries one property. This is not so. The effect of a gene is dependent on its location and its interaction with other genes. Therefore, insertion of foreign genes is bound to cause unpredictable surprises including, in the worst case, the appearance of harmful substances in the food.
Moreover, the method of genetic engineering is so crude that it is impossible to decide beforehand where the inserted genes will stick in the master program. This adds further to the unpredictability of the outcome of artifical gene insertion (genetic engineering).
In spite of this inevitable unpredictability, the safety of GE foods has not been tested in such a way that unexpected harmful substances are ruled out.
The knowledge about genes is very incomplete
In addition, the knowledge about the master program is very incomplete. Actually only 2-3 percent of it are so called genes. Their function is fairly well known. The function and purpose of the remaining 97-98 percent is very little known.
From genetics it is well known that even changing just a little code word in the master program can mean the difference between health and a deadly hereditary disease. So the genes are very powerful.
It is probably not a coincidence that an unproportionately large part of our members are computer experts. They know that the addition ...

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