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Biology -- DNA
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DNA Microarray Methodology - Flash Animation
This animation demonstrates how DNA microarray experiments are performed. DNA chips are used to determine which genes are activated and which genes are repressed when two populations are compared. In this case, the...
The discovery of enzymes that could cut and paste DNA made genetic engineering possible. Restriction enzymes, found naturally in bacteria, can be used to cut DNA fragment at specific sequences, while another enzyme, DNA...
Stanley Cohen and Herbert Boyer's historic experiment used techniques to cut and paste DNA to create the first custom-made organism containing recombined or 'recombinant' DNA. Cohen and Boyer inserted the recombinant...
Early DNA Sequencing
Two sequencing techniques were developed independently in the 1970s. The method developed by Fred Sanger used chemically altered 'dideoxy' bases to terminate newly synthesized DNA fragments at specific bases (either A,...
DNA Microarray Learning Module
The Southwest Center for Microsystems Education is a Regional Advanced Technology Education Center funded in part by the National Science Foundation. This learning module introduces users to DNA microarrays, including...
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