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What is the role of DNA ligase in recombinant DNA technology? (2021)

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Question: What is the role of DNA ligase in recombinant DNA technology? (2021)

Options:

  1. To cut DNA
  2. To join DNA fragments
  3. To replicate DNA
  4. To transcribe RNA

Correct Answer: To join DNA fragments

Exam Year: 2021

Solution: 

DNA ligase is an enzyme that joins DNA fragments together, which is crucial for creating recombinant DNA molecules.

What is the role of DNA ligase in recombinant DNA technology? (2021)

Practice Questions

Q1
What is the role of DNA ligase in recombinant DNA technology? (2021)
  1. To cut DNA
  2. To join DNA fragments
  3. To replicate DNA
  4. To transcribe RNA

Questions & Step-by-Step Solutions

What is the role of DNA ligase in recombinant DNA technology? (2021)
  • Step 1: Understand that DNA is made up of smaller pieces called fragments.
  • Step 2: Know that recombinant DNA technology involves combining DNA from different sources.
  • Step 3: Realize that when scientists cut DNA, they create fragments that need to be joined together.
  • Step 4: Learn that DNA ligase is an enzyme that helps to connect these DNA fragments.
  • Step 5: Recognize that by using DNA ligase, scientists can create new DNA molecules that contain genes from different organisms.
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