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Lab 11
DNA: Isolation and detection
10
Biology
Undergraduate 3
04/09/2012

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Term
Allows the researcher to explore all areas of genetics including: DNA sequencing, gene activation, manipulation and recombination.
Definition
Recombinant DNA technologies
Term
Cell Lysis
Definition
Step one of purification, breaks apart cells to liberate DNA from nucleus.
Term
Cell lysis, chemicals
Definition
buffer- EDTA (chelates calcium) Detergent- SDS (causes membrane holes to open and burst).
Term
Removal of RNA and proteins
Definition
Step 2 for DNA purification. Removing RNA. Add enzyme Rnase A, fragmenting RNA.
Term
Removal of PROTEINS
Definition
ammonium acetate, causes proteins to precipitate out while DNA remains aq.
Term
Purifying the DNA
Definition
requires the addition of isopropanol and enthanol to remove salts. DNA is a white pellet.
Term
How to determine size of DNA fragments
Definition
gel electrophoresis, using a 'gel box'. Charged particles move on a generated electric field within the slab of agarose.
Term
Power supply runs from the negative electrode (_____) to the positive one
Definition
cathode, anode.
Term
At the pH we will be using in lab (8.0) the DNA and RNA are _____ charged
Definition
negatively
Term
Agrose is a _______, where ____ particles are moving much faster than _____ ones.
conclude-
Definition
polysaccharide, smaller, larger.
smallest pieces at the end of the gel.
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