Multiple Choice
In agarose gel electrophoresis used for DNA analysis, which DNA fragments move faster through the gel toward the positive electrode?
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18. Molecular Genetic Tools
Methods for Analyzing DNA
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In agarose gel electrophoresis, how are DNA or RNA molecules typically visualized on the gel after separation?
A
By staining the gel with a nucleic acid–binding dye (e.g., ethidium bromide or SYBR Safe) and viewing bands under UV or blue light
B
By detecting radioactivity emitted spontaneously by DNA or RNA without any labeling or staining
C
By adding DNA polymerase to the gel so it synthesizes complementary strands that become visible to the naked eye
D
By measuring the temperature increase of the gel caused by nucleic acid migration and converting it into an image
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