Dental Admissions Test (DAT) Practice Test

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What is the process called when DNA fragments are separated based on their sizes?

  1. Electrophoresis

  2. Chromatography

  3. Gel Filtration

  4. Plasmid Extraction

The correct answer is: Electrophoresis

Electrophoresis is the correct answer because it is the process of separating DNA fragments based on their sizes through the use of an electric field. Chromatography and gel filtration are incorrect because they are methods used to separate molecules based on their physical and chemical properties, not specifically based on size. Plasmid extraction is also incorrect because it is a process to isolate and purify specific DNA sequences, not to separate fragments based on size.

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