NEET 2023, Biology Q26: Recombinant DNA Technology
NEET2023Biology
Q.
In gene gun method used to introduce alien DNA into host cells, microparticles of ________ metal are used.
- A
Copper
- B
Zinc
- C
Tungsten or gold
- D
Silver
Solution
The biolistic (gene gun) method coats microscopic particles of an inert, dense metal — tungsten or gold — with DNA and shoots them into target cells. Inertness ensures the metal does not interfere with cellular chemistry; high density gives them enough momentum to penetrate the cell wall.
Concept behind this question
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