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Biology - Cloning. In this case study I shall explain the divisive subject of cloning, I shall endeavour to give an insight into the many factors of cloning, a detailed explanation to what it is and why we do it. I will include what the experts and the pu

Extracts from this document...

Introduction

Contents 1. Title Page 2. Contents 3 - 4. Introduction 5. In the News 6. Historical Content 7. Advantages/Disadvantages 8. Discussion 9. Conclusion 10. Bibliography & References Introduction In this case study I shall explain the divisive subject of cloning, I shall endeavour to give an insight into the many factors of cloning, a detailed explanation to what it is and why we do it. I will include what the experts and the public think of this ever growing occurrence. I shall cover the historical background and breakthroughs in the subject, all of this, and backed with my opinion and helpful resources, I hope to deliver a flowing and detailed explanation covering all of the aspects of replicating organisms, combined with detailed explanation covering all related issues. It all began with the ancient Egyptian race, they wanted to clone themselves as an offering to the gods, but this was just an ancient, lost theory. Attempts at cloning ran through the years until 1885. The first cloned animals were created by Hans Driesch. Driesch's original goal was not to create identical animals, but to prove that genetic material is not lost during cell division. His experiments involved sea urchins because they have large embryo cells and grow independently. ...read more.

Middle

[2] Can scientists clone dinosaurs and other prehistoric life? Theory 1: Studies of cloning dinosaurs from prehistoric DNA has gotten scientists frantic, the theory of cloning dinosaurs from prehistoric DNA is said to be extracted from the bellies of mosquito's that is preserved in amber, this may seem very possible when you first think about it, but it's highly unlikely that scientists can find usable dinosaur DNA in a mosquito's fossil. Furthermore, scientists would need a very specific specimen, and to find a female mosquito land in tree resin immediately after it has gathered the blood is highly improbable and chances are very diminutive. Above all of that, the most common form of cloning used on animals today involves nuclear transfer. Scientists put the nucleus of one cell into a second cell of the same species after destroying the second cell's nucleus. There are no dinosaur cells or dinosaur eggs that could host new set of DNA. Researchers would have to find a different way to let the DNA grow into a living dinosaur. [3] Theory 2: In this theory, it involves finding DNA specimens in fossilized bones instead of in the bodies of insects. ...read more.

Conclusion

[4] But should we take the risk, how do we know if there is a new substance in meat that could cause and allergic reaction? - The cloned animal could not make a new allergenic substance or toxin in the absence of a mutation which could be caused in any cow. [4] Conclusion From all of the evidence and facts about cloning collected, I believe that Cloning should be allowed because it doesn't pose any critical threat to today's economy. Even future generations may benefit if we figure out how to mass clone. But we need to be careful if we do decide mass clone because, there may be one, just one odd defect or mutation that is present within the gene. It might take many years to perfect this science and if we start now at low levels, we could save or sustain our economy for future generations. I think that for our generation, we should not experiment on humans too much because we could breed a new race of people who could be a serious threat to nowadays. Cloning animals is the start of cloning and I think that we cannot develop our skills too rapidly or there could be a chance of endangering the food supply. ...read more.

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Here's what a teacher thought of this essay

3 star(s)

***A soundly researched report with some thought as to the reliability of the sources of information used.
To improve
Try to differentiate between primary and secondary sources of information in the discussion of the references.
The report would be improved if each type of cloning was discussed separately as each type has different methods and applications. This means the advantages and disadvantages are very different for each method.
There are three different types of artificial cloning: gene cloning( DNA cloning), reproductive cloning and therapeutic cloning.
The report completely ignores the cloning of plants which has a large number of successful commercial applications (tissue culture) and including this would make the report more balanced.

Marked by teacher Stevie Fleming 03/01/2013

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