Dna fragments can be visualized in polyacrylamide gel

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20DNA fragments can be visualized in polyacrylamide-gel electrophoresis by staining with _____,which binds to double-stranded DNA and fluoresces an intense orange when irradiated by UV light.
Section: 41.22
Chapter 41 Recombinant DNA TechniquesMultiple-Choice Questions21The biological role of restriction enzymes in bacteria is to
Section: 41.222Which of the following DNA sequences contains a 48 base palindromic site? (Note: Only one strand is shown.)
Section: 41.223What do Southern, Northern, and Western blots detect, respectively?
Section: 41.224The specificity or stringency of a PCR reaction can be controlled by altering the reactionA)volume. B)target sequence. C)temperature and salt concentration. D)All of the above. E)None of the above. Ans: C
Section: 41.325Reagents necessary for sequencing by chain termination include:
Section: 41.326Plasmids used in recombinant DNA technology typically
3
Chapter 41 Recombinant DNA Techniques
Section: 41.327For identification of a gene, against which strand of DNA must the probe complement?
Section: 41.228Reverse transcriptase is normally found inA)plants. B)retrovirus. C)mitochondria. D)All of the above. E)None of the above. Ans: B
Section: 41.329The probe used to isolate a gene from a genomic library is often
Section: 41.130A technique used to identify RNA after gel electrophoresis and which employs ssDNA in the detection process is
Section: 41.2

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