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How is recombinant DNA introduced into host cells in the method of micro-injection?

Options

  1. ABy incubating the cells with recombinant DNA on ice
  2. BBy injecting DNA directly into the nucleus
  3. CBy bombarding cells with high velocity micro-particles
  4. DBy allowing a disarmed pathogen to infect the cell

Correct answer

B. By injecting DNA directly into the nucleus

Step-by-step solution

This is not the only way to introduce alien DNA into host cells. In a method known as micro-injection, recombinant DNA is directly injected into the nucleus of an animal cell . In another method, suitable for plants, cells are bombarded with high velocity micro-particles of gold or tungsten coated with DNA in a method known as biolistics or gene gun. And the last method uses ‘disarmed pathogen’ vectors, which when allowed to infect the cell, transfer the recombinant DNA into the host

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