Biology Biotechnology SZABMU 2025
PMDC Verified Question 39 of 65
A biological laboratory is developing gene therapy with a modified virus that infects the blood only. Which of the following category does this virus belong to?
A
Algal virus
B
Fungal virus
C
Bacterial virus
D
Animal virus
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Animal virus
Concept:

Viral tissue tropism determines host cell specificity based on surface receptor interactions.

Solution:

Viruses engineered for human gene therapy targeting human blood cells (such as hematopoietic stem cells or lymphocytes) belong to the category of modified mammalian/animal viruses (e.g., retroviruses, lentiviruses, adenoviruses).

Why other options are incorrect:

  • Algal virus: Algal viruses specifically infect photosynthetic eukaryotic algae and cannot infect human target tissues.


  • Fungal virus: Mycoviruses infect fungal organisms exclusively and do not possess tropism for human blood cells.


  • Bacterial virus: Bacteriophages specifically infect bacterial cells and cannot naturally infect human somatic cells.

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