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Most nucleic acid amplification techniques amplify and detect target DNA, but in branched chain detection a labeled probe attaches to the target DNA and the label is amplified for detection.

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What technique listed is best to use to detect a mutated tumor gene in a section of tumor tissue?


A) Branched chain PCR
B) Ligase chain reaction
C) Nucleic acid sequence based amplification
D) In situ amplification

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Which is more sensitive, nucleic acid amplification techniques or nucleic acid probe techniques?


A) Nucleic acid probe techniques.
B) Nucleic acid amplification techniques.
C) The sensitivities of the two techniques are approximately equal.
D) It depends on the particular technique as some amplification techniques are more sensitive than others.

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What is an advantage of nucleic acid sequence based amplification (NASBA) ?


A) It is faster than PCR.
B) Primers are not necessary.
C) The reaction is isothermal.
D) Product can be detected in real time.

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The three basic steps of polymerase chain reaction (PCR) are denaturation, primer annealing, and primer extension. Which specification listed below is correct?


A) Primer design-oligonucleotide of 15- 30 base pairs
B) Primer extension-10 minutes during each cycle
C) Primer annealing-95° C for 1 minute
D) Denaturation-50° C for 5 minutes
E) Primer extension-37° C when Taq polymerase is used

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