Genetic Engineering

Essay specific features

 

Issue:

Science

 

Written by:

Eric C

 

Date added:

October 25, 2013

 

Level:

University

 

Grade:

A

 

No of pages / words:

2 / 403

 

Was viewed:

2742 times

 

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Essay content:

This problem was solved in 1970 using a bug, Escherichia coli, a normally innocuous commensal occupant of the human gut. By inserting a piece of DNA of interest into a vector molecule, a molecule with a bacterial origin of replication, when the whole recombinant construction is introduced into a bacterial colonies all derived from a single original cell bearing the recombinant vector, in a short time a large amount of DNA of interest is produced...
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This can be purified from contaminating bacterial DNA easily and the resulting product is said to have been "cloned". So far, scientists have used genetic engineering to produce, for example: - improve vaccines against animal diseases such as footrot and pig scours; - pure human products such as insulin, and human growth hormone in commercial quantities; - existing antibiotics by more economical methods; - new kinds of antibiotics not otherwise available; - plants with resistance to some pesticides, insects and diseases; - plants with improved nutritional qualities to enhance livestock productivity...
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