Question

We have discussed three methods of horizontal gene transfer. Correctly match the method with its name.

Uptake of DNA from the environment    DNA transfered into the bacterial genome from a virus.    Transfer of a plasmid between two cells connected by a pilus

A. Conformation B. Transformation C. Transduction D. Convection E. Translation F. Conjugation

Answer 1

Question:

Answer: Uptake of DNA from the environment - Transformation. Hence, option B is the correct answer.

Transformation is a process of horizontal gene transfer that involves uptake of DNA by an organism from the environment. For example, uptake of plasmid DNA by bacteria from the environment.

DNA transferred into the bacterial genome from a virus.- Transduction. Hence, option C is the correct answer.

Transduction is a method of horizontal gene transfer that involves transfer of foreign DNA into a bacterial genome by virus or a viral vector. For example: Transfer of DNA by virus from one bacterium to other.

Transfer of a plasmid between two cells connected by a pilus - Conjugation. Hence, option F is the correct answer.

Conjugation is a process of horizontal gene transfer that involves transfer of genetic material or plasmid from one bacterium to other by direct cell to cell contact such as pilus.

Conformation, Convection and Translation are not the methods of horizontal gene transfer. Hence, option A, D and E are incorrect.