Biotechnology isn't something new - selective breeding to create more useful varieties of animals and plants is a form of biotechnology that human beings have used for thousands of years.
Biotechnology includes any use of science or technology to alter the characteristics of a particular breed or animal.
Biotechnology can be good or bad for animals - and it may also produce an answer to the ethical problems of experimenting on animals.
Transgenic animals raise a particularly difficult problem.
Human problems
Newspaper articles about the ethical problems of genetically engineered animals are usually concerned about the danger these animals may pose to human beings (usually to human health), rather than any implications for the animals themselves.
Animal rights
Genetic engineering and selective breeding appear to violate animal rights, because they involve manipulating animals for human ends as if the animals were nothing more than human property, rather than treating the animals as being of value in themselves.
Recent action to allow animals to be patented reinforces the idea of animals as human property, rather than beings in their own right.
Animal welfare
Biotechnology can be good for animals. Selective breeding and genetic engineering can benefit animals in many ways:
Improving resistance to disease
Breeding to remove characteristics that cause injury
eg selecting cattle without horns
But biotechnology can also be bad for animals - the good effects for the breeder can offset by painful side-effects for the animals:
Modern pigs have been bred to grow extra fast - some breeds now grow too fast for their hearts, causing discomfort when animals are too active
Broiler chickens are bred to grow fast - some now grow too fast for their legs
Transgenic animals, i.e., engineered to carry genes from other species, have the potential to improve human welfare in:
agriculture, such as larger sheep that grow more wool
medicine, such as cows that produce insulin in their milk
industry, such as goats that produce spider silk for materials production
Nowadays, breakthroughs in molecular biology are happening at an unprecedented rate. One of them is the ability to engineer transgenic animals, i.e., animals that carry genes from other species. The technology has already produced transgenic animals such as mice, rats, rabbits, pigs, sheep, and cows. Although there are many ethical issues surrounding transgenesis, this article focuses on the basics of the technology and its applications in agriculture, medicine, and industry.
2007-01-29 04:26:47
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answer #1
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answered by babitha t 4
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well it is a very interesting topic and u can find amle info on it.
you can quote examples of insulin being developed for curing diabetes(insulin is being produced by Brassica napus via genetic engineering)
preparation of curd, fermentation of mollases to form alcohol is traditional biotechnology. further more obtaining SCP(single cell protein ) from spirulina is also an example
2007-01-28 19:55:53
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answer #3
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answered by xyz123 1
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