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Molecular cloning takes advantage of the fact that the chemical structure of DNA is fundamentally the same in all living organisms. Therefore, if any segment of DNA from any organism is inserted into a DNA segment containing the molecular sequences required for DNA replication, and the resulting recombinant DNA is introduced into the organism from which the replication sequences were obtained ...
Cloning is commonly used to amplify DNA fragments containing whole genes, but it can also be used to amplify any DNA sequence such as promoters, non-coding sequences and randomly fragmented DNA. It is used in a wide array of biological experiments and practical applications ranging from genetic fingerprinting to large scale protein production.
The blue–white screen is a screening technique that allows for the rapid and convenient detection of recombinant bacteria in vector-based molecular cloning experiments. This method of screening is usually performed using a suitable bacterial strain, but other organisms such as yeast may also be used. DNA of transformation is ligated into a ...
Colony hybridization begins with a desire to extract a segment of DNA containing a specific gene, such as a gene that conveys antibiotic resistance. [4] A specific piece of DNA is removed from its respective cell culture and inserted into a bacterial plasmid via a process known as recombination. These bacterial plasmids are cultured on a ...
Bacterial transformation involves moving a gene from one bacteria to another. It is integrated into the recipients plasmid. and can then be expressed by the new host. Transformation is the direct alteration of a cell's genetic components by passing the genetic material through the cell membrane.
Negative selection through replica plating to screen for ampicillin sensitive colonies. Replica plating is a microbiological technique in which one or more secondary Petri plates containing different solid (agar-based) selective growth media (lacking nutrients or containing chemical growth inhibitors such as antibiotics) are inoculated with the same colonies of microorganisms from a primary ...
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