When PCR amplification of SSU (small subunit ribosomal RNA) yields a population of different PCR products of about the same molecular weight, these fragments can be separated for further analysis by ________.
A. denaturing gradient gel electrophoresis
B. size exclusion chromatography
C. isoelectric focusing
D. DNA hybridization
Answer: A
Biology & Microbiology
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a. A b. B c. C d. D e. E
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Instead of a(n) ____________________ group to link nucleotides together, the modified nucleotides used during automated DNA sequencing have only an -H. Fill in the blank(s) with the appropriate word(s)
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The behavioral response tested using the models in Figure 51-1 is:
a. classical conditioning. b. habituation. c. imprinting. d. insight. e. a sign stimulus
Biology & Microbiology
The cell type responsible for contact dermatitis and tissue rejection is:
A. cytotoxic T cells B. Th1 cells C. CD8 cells D. CD4 cells
Biology & Microbiology