Which of the Following Parameters Affects the Distance DNA Molecules

question 20

Multiple Choice

Which of the following parameters affects the distance DNA molecules migrate during electrophoresis, at pH = 8?

• A) The mass of the DNA
• B) The total ionic charge on the DNA molecule
• C) The fact that each nucleotide contributes one negative charge at this pH.
• D) The concentration of agarose or polyacrylamide in the gel.
• E) All of these features control the distance the DNA migrates.

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