5615 Genetic Engineering Terms and Definitions at www.MedicalGlossary.org

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Genetic Engineering

Definition: Directed modification of the gene complement of a living organism by such techniques as altering the DNA, substituting genetic material by means of a virus, transplanting whole nuclei, transplanting cell hybrids, etc.
Notes: DF: GENET ENGINEERING
Previously Indexed: Eugenics (1966-1972),Genetics, Medical (1966-1972)

Genetic Engineering Categories.
Directed Molecular Evolution - The techniques used to produce molecules exhibiting properties that conform to the demands of the experimenter. These techniques combine methods of generating structural changes with methods of selection. They are also used to examine proposed mechanisms of evolution under in vitro selection conditions.
DNA Shuffling - The use of DNA recombination (RECOMBINATION, GENETIC) to prepare a large gene library of novel, chimeric genes from a population of randomly fragmented DNA from related gene sequences.
Protein Engineering - Procedures by which protein structure and function are changed or created in vitro by altering existing or synthesizing new structural genes that direct the synthesis of proteins with sought-after properties. Such procedures may include the design of MOLECULAR MODELS of proteins using COMPUTER GRAPHICS or other molecular modeling techniques; site-specific mutagenesis (MUTAGENSIS, SITE-SPECIFIC) of existing genes; and DIRECTED MOLECULAR EVOLUTION techniques to create new genes.
Sex Preselection - Methods for controlling genetic SEX of offspring. It may include SEX DETERMINATION (GENETICS) and other means.

Genetic Engineering Definitions and Terms

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