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Genetic fingerprinting

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Introduction

25/11/09 Genetic Finger Printing 1) Genetic fingerprinting is a method which identifies people using only samples of their DNA. It produces very precise results and is used a lot in forensic science and paternity testing. A small sample of hair, blood or other tissue is given. This sample will contain white blood cells which are broken open using detergent. Then enzymes cuts the DNA making it smaller and this is added to agarose gel. ...read more.

Middle

If particular diseases run in a family, it can help predict if individuals or their unborn children are at risk as well. * Forensic science - To match crime suspects to samples of skin, hair, blood or saliva found. * Paternity testing - The DNA from the mother, child and alleged father are compared. The DNA matching DNA between the mother and the child are ignored and the left over DNA from the father are observed and can determine who is the father. ...read more.

Conclusion

* Study of pre historic times - To find out the genetic patterns of population. 3) Advantages of genetic fingerprinting: * Ability to prevent disease through medicine and lifestyle changes. * Encourages people that are prone to disease to have disease screenings at an earlier age. * Gives people time to prepare for possible illness, emotionally, physically and financially. 4) Disadvantages of genetic fingerprinting: * Accuracy of tests are not 100% and are dependant on experience and experience of lab staff. * Causes a lot of families emotional distress. * Peoples DNA's could be very similar causing confusion. ...read more.

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Here's what a star student thought of this essay

4 star(s)

Response to the question

The focus on the question is done well with all bases covered. The candidate could have covered DNA in more detail on how it is used in each procedure, but these are just minor points, and provided more discussion ...

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Response to the question

The focus on the question is done well with all bases covered. The candidate could have covered DNA in more detail on how it is used in each procedure, but these are just minor points, and provided more discussion on the advantages and disadvantages to show rounded understanding of the topic.

Level of analysis

The process of DNA testing and the relationship to fingerprinting is done very well. It is defined very concisely with a good aiding diagram. The introduction is good because it defines what the procedure is and why it is used. They define the different ways genetic fingerprinting are used well, although it might have been interesting to see comparison between the different techniques for the uses and how reliable the different tests are. Advantages and disadvantages lists are good but I think they should have been expanded on to explain why they are advantages or disadvantages and maybe something that can be done to overcome them.

Quality of writing

Punctuation, grammar and spelling are flawless. The format of the piece is good, as is the tone. The sections could have been split up better than 1) 2) so the essay had better flow.


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Reviewed by skatealexia 19/08/2012

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