genetic engineering

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ge·net·ic en·gi·neer·ing

internal manipulation of basic genetic material of an organism to modify biologic heredity or to produce peptides of high purity, such as hormones or antigens.
Farlex Partner Medical Dictionary © Farlex 2012

genetic engineering

Scientific alteration of the structure of genetic material in a living organism. It involves the production and use of recombinant DNA and has been employed to create bacteria that synthesize insulin and other human proteins.

genetic engineer n.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


Any technological application that uses biological systems, living organisms or derivatives thereof, to make or modify products or processes for specific use.

Biotech tools
Recombinant DNA, monoclonal antibody and bioprocessing techniques, cell fusion.
Biotech products
Antibiotics, insulin, interferons, recombinant DNA, and techniques (e.g., waste recycling).
Ancient forms of biotechnology
Production of bread, cheese, wine, beer.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

genetic engineering

Biological engineering, genetic modification, recombinant DNA technology Molecular biology The manipulation of a living genome by introducing or eliminating specific genes through recombinant DNA techniques, which may result in a new capability–eg production of different substances or new functions, gene repair or replacement
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

genetic engineering

The deliberate alteration, for practical purposes, of the GENOME of a cell so as to change its hereditable characteristics. This is done mainly by recombinant DNA techniques using gene copies obtained by the POLYMERASE CHAIN REACTION. Enzymes (restriction enzymes) are used to cut the nucleic acid molecule at determinable positions and short lengths of DNA from another organism are inserted. The second cell will now contain genes for the property or characteristic borrowed from the first cell. The genes might, for instance, code for the production of a useful protein such as insulin or some food material. Bacteria, yeasts and other organisms are used as the hosts for the new gene sequences and these organisms can be cloned in enormous numbers to produce the desired effects, or substances, for which the new genes code. Well over 100 valuable drugs and vaccines have been produced in this way, including human insulin, growth hormone, interferons, hepatitis vaccine, digoxin monoclonal antibody, orthoclonal OK3, somatotropin, TISSUE PLASMINOGEN ACTIVATOR (TPA), erythropoietin, granulocyte MACROPHAGE colony-stimulating factor (GM-CSF), granulocyte colony stimulating factor (G-CSF) and Factor VIII. Cloned copies of the genes for many genetic diseases have been made available for use as probes for the identification of the disease by AMNIOCENTESIS, before birth. The possibility also arises of correcting genetic defects in early embryos. Genetic engineering offers almost unlimited possibilities for the advancement of medicine, science and technology, but strict control is also necessary if the many manifest dangers are to be avoided.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

genetic engineering

a broad term for all those processes that result in the directed modification of the genetic complement of an organism. The term applies to a wide range of genetical techniques, for example, plant and animal breeding to improve physiological performance by SELECTION, and GENE CLONING techniques for the deliberate transfer of genetic material from one organism to another where it is not normally found. For example, a gene can be removed from human cells and transferred to microbial cells (using BACTERIOPHAGE or PLASMID vectors) where the ‘foreign’ gene can direct the formation of useful products. There are many applications of genetic engineering in industry, agriculture and medicine. In industry a range of recombinant proteins has been obtained, for example INSULIN, INTERFERON and HUMAN GROWTH HORMONE. Genetic engineering is also being used in the development of VACCINES, novel plant varieties etc. See also TRANSGENESIS, PROTEIN ENGINEERING.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Genetic engineering

The manipulation of genetic material to produce specific results in an organism.
Mentioned in: Gene Therapy
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
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The preservation of indigenous cultures (including tangible and intangible elements, arts and artifacts, traditions, knowledge systems, ecosystem management, spirituality, and biogenetics) becomes an essential component of a comprehensive indigenous human rights "package." In the past, however, public policies were frequently designed to eliminate and transform indigenous cultures, which were considered detrimental to the idea of national integration and development (for example, the controversial experience of residential schools for American Indian children in Canada and the United States).
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