• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Cloning: medical breakthrough or step too far?

Extracts from this document...

Introduction

Cloning: medical breakthrough or step too far? Cloning is defined as making multiple copies of a DNA sequence, or making a clone of a organism (clone meaning "A cell, group of cells, or organism that are descended from and genetically identical to a single common ancestor, such as a bacterial colony whose members arose from a single original cell")(1). The act of cloning is carried out everyday in a human, plant or animal body. Cells undergo mitosis (which is cell division where the DNA is copied into the "daughter" cell to create a exact copy of itself, unless there is mutation) so they can heal the body. In Bacteria they multiply by Mitosis as well, but most often more quickly than in animal cells, making them a problem since they are harmful to the Body. Is cloning unnatural? Well, cloning can occur naturally in a greenhouse, the only interference being that of the owner "pruning" a shrug and planting the twigs in another pot and allowing them to grow as well, the "offspring" being exactly identical to its parent plant in every way, down to the DNA. ...read more.

Middle

Possible future uses for cloning are the cloning of individual body parts so they can be transplanted into humans whose own ones are failing, this advantage being that there would be little or no chance of the organ being rejected as it is the same genetic material of the patient. The cloning of entire humans could be possible too for this purpose.(5) How do you clone organisms? This is a difficult process as there is only one method really available to scientists at the moment. You would have to extract a cell from the original organism and place it into the egg cell of the species in question (if the donor of the DNA is male, if not then the females eggs can be used for this purpose), then stimulated into growth inside the egg cell, eventually producing a clone. This has been achieved in sheep and a couple of other animals but has never been achieved in humans. Reasons for the lack of progress in human cloning is because some people object to it on either religious or moral arguments, ...read more.

Conclusion

Some of the main arguments for cloning are that it could provide babies for infertile couples who wish to have children but cannot do so on their own, Clone pets or rare species for the preservation of the species involved, reproduce expensive breeding animals before they die so that they can sustain food production, and the transplant of hearts and other organs so potentially life threatening injuries could be easily avoided. (4) Conclusions that can be drawn from these arguments are that further research needs to be made in order for cloning in humans to effectively and efficiently take place with minimal, or even no risk of DNA being damaged or mutated so that the clones will be useless. Until that time Cloning should continue on under research until it is legal to test the process on humans. Resource list: 1. Cambridge Advanced Learners Dictionary, Cambridge University Press, 2002 2. http://afgen.com/clon17a.html 3. Cloned stem cells may give new lease of life, Sylvia Pag´┐Żn Westphal, New Scientist, November 02 4. http://www.reproductivecloning.net/Articles/rebuttal.html 5. Advanced Biology, Michael Kent, 2000, pages 408 & 409 6. http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/A/AsexualReproduction.html ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Variation and Inheritance section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Variation and Inheritance essays

  1. Marked by a teacher

    Cloning. Should it be banned? I will explain all the different types of cloning ...

    Religious views on human cloning Religious views are some of the strongest views around in this time, with multicultural areas all over the world there is often a conflict in religious views.

  2. Is cloning the way of the future

    We can use this process to develop other clones of people and use it as a modified medicine in the future. Unnatural cloning Unnatural cloning is, when cloning does not occur naturally but it man made process as the scientist and doctor use a certain method to produce clones for certain purposes or for a certain reason.

  1. Should Biological Warfare Research Continue?

    % to 2 wt %; and water. Tucker, Mark D.; Betty, Rita G.; Tadros, Maher E. (the inventors) claim that by using these compounds, they will neutralise the biological toxant. Taken from the website - http://www.wipo.int/pctdb/en/wo.jsp?IA=US2002027724&DISPLAY=STATUS During the 14th Century, biological weapons were used by armies; the method they used

  2. Stem Cell Research

    In 1997 Ian Wilmut, after 227 attempts, successfully cloned the first mammal - a sheep9. However he opposes the idea of cloning the idea, along with many others. So is this a case of Religion vs. Science, or Ethical Science vs.

  1. Genetics Research

    Telophase I Cytokinesis completes the first division producing two haploid(number of chromosomes in a gamete) cells that contain one set of chromosomes in a replicated state. The nucleus briefly reappears. Interkinesis A brief period between the two Meiotic divisions. ***Because of the complexity of Metaphase I, anomalies such as crossing over and nondisjunction can occur.

  2. Analysis of Charles Darwin's Origin of the Species

    Then how can this be answered by natural selection? Moreover, how can the neuter variant have been passed along and slowly adapted over the ages? It is in defense of this line of questioning that Darwin truly shines. He states that the selection not only involves the individual but the family as a whole.

  1. Selective Breeding

    * The students kept the chicken to make the test fair as it showed it wasn?t any conditions that affected the growth of the chickens as they were in the same place. * The meat chicken has been selectively bred to use its energy to creating body mass, while the layer is bred to use all its energy laying eggs.

  2. Research Project "Is Cloning Beneficial or Harmful?"

    ?The FDA?s assessment of animal health risks was highly flawed and scientifically unsound. The government should not lift the moratorium on animal cloning until the animal welfare problems associated with cloning are thoroughly considered and properly addressed.? They had created a successful animal clone, but as thought there were still

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work