Multiple Choice
In the polymerase chain reaction (PCR), which enzyme synthesizes (builds) the new DNA strands during the extension step?
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18. Molecular Genetic Tools
Methods for Analyzing DNA
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In methods for analyzing DNA, gel electrophoresis separates DNA fragments primarily according to their:
A
Size (length in base pairs), with smaller fragments migrating farther through the gel
B
DNA strandedness, with double-stranded DNA migrating farther than single-stranded DNA of the same length
C
Base composition (the percent of content), with higher fragments migrating farther
D
Degree of methylation, with more methylated fragments migrating farther
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