Biology Biotechnology Principles and Processes Cloning Vectors and Competent Host Single Correct MCQ
Published on: August 11, 2026

In recombinant DNA methods, the term vector refers to

A
the enzyme that cuts DNA into restriction fragments
B
the sticky end of a DNA fragment
C
a plasmid used to transfer DNA into a living cell
D
a DNA probe used to identify a particular gene

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The correct answer is:
C

A vector in recombinant DNA technology is a DNA molecule (commonly a plasmid) used to carry and introduce foreign DNA into a host cell for cloning or expression.

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