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Which of the following techniques is used to separate DNA fragments by size?

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Question: Which of the following techniques is used to separate DNA fragments by size?

Options:

  1. PCR
  2. Gel electrophoresis
  3. Cloning
  4. DNA sequencing

Correct Answer: Gel electrophoresis

Solution: 

Gel electrophoresis is used to separate DNA fragments based on their size.

Which of the following techniques is used to separate DNA fragments by size?

Practice Questions

Q1
Which of the following techniques is used to separate DNA fragments by size?
  1. PCR
  2. Gel electrophoresis
  3. Cloning
  4. DNA sequencing

Questions & Step-by-Step Solutions

Which of the following techniques is used to separate DNA fragments by size?
Correct Answer: Gel electrophoresis
  • Step 1: Understand that DNA is made up of different sized fragments.
  • Step 2: Know that we want to separate these fragments based on their size.
  • Step 3: Learn about gel electrophoresis, a technique used for this purpose.
  • Step 4: In gel electrophoresis, DNA fragments are placed in a gel and an electric current is applied.
  • Step 5: The electric current causes the DNA fragments to move through the gel.
  • Step 6: Smaller DNA fragments move faster and travel further than larger ones.
  • Step 7: After the process, you can see the separated DNA fragments based on their size.
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