Multiple Choice
In agarose gel electrophoresis, the separation (analysis) of DNA fragments is primarily based on which property?
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18. Molecular Genetic Tools
Methods for Analyzing DNA
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In the polymerase chain reaction (PCR), which enzyme synthesizes (builds) the new DNA strands during the extension step?
A
DNA ligase
B
A thermostable DNA polymerase (e.g., Taq DNA polymerase)
C
RNA polymerase
D
A restriction endonuclease (restriction enzyme)
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