Which of the following is not a method of introducing alien DNA into host cells?
1.Microinjection
2.Heat shock method
3.Being placed alongwith the cell into a gene gun
4.Gel electrophoresis

Hi Manisha,
Please find below the solution to the asked query:

The correct option is 4.
Gel electrophoresis is the technique used to separate the DNA fragments under the influence of electric current. Electric field is applied to the electrophoresis matrix (commonly agarose gel) and negatively charged DNA fragments move towards the anode and get separated according to their size.

Hope this information will clear your doubts about the technique not involved in introduction of alien DNA into host cells.
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Gel electrophoresis
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