Question

In which of the following method, foreign DNA is coated on the tungsten particle?

• A. Microprojectile gun method
• B. Microinjection method
• C. Liposome-mediated gene transfer
• D. None of the above

Answer 1

The correct option is A Microprojectile gun method

Microprojectile gun method is a device for delivering exogenous DNA to cells. Here, the impregnation of the cells with nucleic acid or with other biological molecules is achieved by coating the molecules that are intended to be introduced in to the cells on to micro carriers which generally is high density tungsten micro particles.

Microinjection is a technique of delivering foreign DNA into a living cell through a glass micropipette.

Liposome-mediated gene transfer is cell-type-specific gene transfer vehicles in vitro and in vivo using liposome.

so, the correct answer is option A.