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Published byKerrie Sullivan Modified over 9 years ago
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PCR The polymerase chain reaction
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Crick and Watson – structure of DNA
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A double helix with two antiparallel strands
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“It has not escaped our notice that the specific pairing we have postulated immediately suggests a copying mechanism for the genetic material.”
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Ends 5’ end 3’end 5’ end
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My gene: 5’TCACGACGTTGTAAAACGACGTCTATACCGAGCTCCTCTCTCTCTCATAGCTGTTTCCTGTGTGAA3’ I design custom oligonucleotides to the “sense” strand at the beginning and the “antisense” at the end Sense 5’TCACGACGTTGTAAAACGACGTCTATACCGAGCTCCTCTCTCTCTCATAGCTGTTTCCTGTGTGAA3’ Anti 3’AGTGCTGCAACATTTTGCTGCAGATATGGCTCGAGGAGAGAGAGAGTATCGACAAAGGACACACTT5’ “forward primer” 5’TCACGACGTTGTAAAACGACG3’ “reverse primer” 3’GTATCGACAAAGGACACACTT5’
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http://www.people.virginia.edu/~rjh9u/pcranim.html
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DNA hybridization rate is altered by changing Temperature: template dependent Salt Concentration: can be standardized DNA concentration: can be standardized Time: can be standardized
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Thermal cycler Peltier effect heating / cooling block Heated lid (prevents evaporation problems) 96 well plate format Microprocessor controlled thermal program
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Real-time PCR Quantitative Fast High sample processing speed Very sensitive
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Parasitic Worm Inoculation Levels Violet= 200 worms per root Red = 50 worms per root Blue= 20 worms per root
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