Gene therapy is a technique for correcting a defective gene through gene manipulation. It involves the delivery of a normal gene into the individual to replace the defective gene, for example, the introduction of gene for adenosine deaminase (ADA) in ADA deficient individual. The adenosine deaminase enzyme is important for the normal functioning of the immune system. The individual suffering from this disorder can be cured by transplantation of bone marrow cells. The first step involves the extraction of lymphocyte from the patient’s bone marrow. Then, a functional gene for ADA is introduced into lymphocytes with the help of retrovirus. These treated lymphocytes containing ADA gene are then introduced into the patient’s bone marrow. Thus, the gene gets activated producing functional T- lymphocytes and activating the patient’s immune system.
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This question is based on core NCERT concepts explained in the chapter and should be revised thoroughly before exams.
Gene therapy is a technique for correcting a defective gene through gene manipulation. It involves the delivery of a normal gene into the individual to replace the defective gene, for example, the introduction of gene fo...
Step-by-step explanation:
• Gene therapy is a technique for correcting a defective gene through gene manipulation
• It involves the delivery of a normal gene into the individual to replace the defective gene, for example, the introduction of gene for adenosine deaminase (ADA) in ADA deficient individual
• The adenosine deaminase enzyme is important for the normal functioning of the immune system
• The individual suffering from this disorder can be cured by transplantation of bone marrow cells
• The first step involves the extraction of lymphocyte from the patient’s bone marrow
Students often lose marks by skipping steps, writing incomplete explanations, or misunderstanding keywords used in the question.
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