lecture notes-genetic engineering-web.ppt

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12 Δεκ 2012 (πριν από 4 χρόνια και 8 μήνες)

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Genetic Engineering

Genetic engineering involves the manipulation
of organism genes.


The central tool is the recombinant DNA technique.



-

to isolate a gene of interest from one organism



-

to insert the isolated gene to a DNA molecule
(known as vector) that can replicate.



-

to provide an environment (known as recipient
cells) that allows reproduction of the joined DNA
molecule and generate the gene product.

Genetic Engineering

To transfer a gene from one organism to
another



-

transformation: plasmid as vector



-

transduction: viruses as vector



-

conjugation: direct cell
-
to
-
cell contact is required.



The gene is transferred by an episome (DNA
molecule).

http://en.wikipedia.org/wiki/Plasmid

http://en.wikipedia.org/wiki/Transduction_%28genetics%29

http://en.wikipedia.org/wiki/Bacterial_conjugation

Transformation

Transfer and cloning of insulin gene

http://plantandsoil.unl.edu/croptechnology2005/gen/?what=animationList

Transformation

Transfer and cloning of insulin gene

bacterial DNA