Biology Biotechnology and Its Application All Topic Question For Revision Test Single Correct MCQ
Published on: August 12, 2026

The process of gene therapy involved -

A
Transferring ADA gene into the blood
B
Treatment by enzyme replacement therapy
C
Introduction of functional ADA c-DNA (using a retroviral vector) into the cultured lymphocytes of patient, which are subsequently returned to patient
D
ADA gene was transferred via DNA vaccine method

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The correct answer is:
C

In gene therapy for ADA deficiency, lymphocytes are isolated from the patient, a functional ADA cDNA is introduced using a retroviral vector, and the modified cells are then returned to the patient.

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