Zaymiey

🔬 Biology  ·  Biotechnology and its Applications  ·  NEET

The first successful gene therapy (1990) treated a young girl suffering from a deficiency of the enzyme:

Answer: Adenosine deaminase.

  • A Salivary amylase
  • B Adenosine deaminase
  • C DNA joining ligase
  • D A restriction enzyme

Correct answer: B. Adenosine deaminase

Explanation: The first clinical gene therapy corrected adenosine deaminase (ADA) deficiency, a cause of severe combined immunodeficiency (SCID).

Concept context

GM crops, transgenic animals, gene therapy, molecular diagnostics, and bioethics. Frequent 2–3 mark questions in NEET.

Read the full Biotechnology and its Applications notes →