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NEET 2009
Exam
NEET
Year
2009
Subject
Zoology
Chapter
Biotechnology - Principles and Processes

NEET 2009 · Zoology · Biotechnology - Principles and Processes

Polyethylene glycol method is used for

Polyethylene glycol method is used for

Options

  1. Agene transfer without a vector
  2. Bbiodiesel production
  3. Cseedless fruit production
  4. Denergy production from sewage

Correct answer

A. gene transfer without a vector

Step-by-step solution

Introduction of DNA into plant cells without the involvement of a biological agent and leading to stable transformation is known as direct gene transfer. There are various methods for direct gene transfer, one of which is chemical method. Certain chemicals, eg, PEG (Polythylene Glycol), polyvinyl alcohol and calcium phosphate enhance the uptake of DNA by plant protoplast. PEG and calcium phosphate are thought to precipitate the DNA onto the outer surface of plasmalemma and the precipitate is taken up by the endocytosis.
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