MDCAT Biology MCQ #1167

A scientist is using gel electrophoresis to separate DNA fragments. What is the basis of separation?

MDCAT Biology MCQ #1167

  1. Question 1

    Q1. A scientist is using gel electrophoresis to separate DNA fragments. What is the basis of separation?

    • A) Size and charge
    • B) Size only
    • C) Charge only
    • D) Sequence

    Answer: Size and charge

    Explanation: DNA separation is based on size (length) and charge; DNA is negatively charged, so size is the main variable.