PCR | Gel electrophoresis |
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a specific area of DNA
What is the template in PCR?
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Pieces of DNA of different sizes
What are the bands on the gel?
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primers
What is added to the PCR reaction that determines the portion of DNA amplified in a PCR reaction?
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Multiple alleles, non specific binding
What is the reason for multiple bands when amplifying the same area of DNA?
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Taq polymerase, MgCL2, dNTPS, buffer,
What are the other components of a PCR reaction beside template and primers? (4 items)
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Heterozygote
What is the genotype of someone whose PCR of Alu resulted in 2 DNA bands?
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Denaturation: 94
Annealing: 55 to 62 Extension: 72
What are the temperatures at which denaturation, annealing, and extension take place?
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mutation or inheritance of different copies of a gene
What is the cause of different alleles?
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denaturation: heat separates DNA
annealing: primers bind extension: Polymerase adds dNTPS to synthesize a copy of fragment
What are the 3 stages and what occurs during each stage?
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An electrical current is applied to the buffer which generates a positive and negative pole. The DNA is negatively charged and is drown toward the positive pole.
What causes the DNA to move through the gel in gel electrophoresis? (Be sure to mention negative charge, positive charge, buffer, and electrical current.)
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