Fundamentholfundamenthol
NEET2023Biology
Q.

In gene gun method used to introduce alien DNA into host cells, microparticles of ________ metal are used.

  1. A

    Copper

  2. B

    Zinc

  3. C

    Tungsten or gold

  4. 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.

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