Question

In recombinant DNA methods, the term vector refers to

• A. a DNA probe used to locate in a particular gene
• B. a plasmid or other agent used to transfer DNA into a living cell
• C. enzyme that cuts DNA into restriction fragments
• D. sticky end or a DNA fragment

Answer 1

The correct option is B a plasmid or other agent used to transfer DNA into a living cell

A vector is a DNA molecule that is used as a vehicle to carry foreign genetic material into another living cell. A vector containing foreign DNA is termed recombinant DNA. The four major types of vectors are plasmids, viral vectors, cosmids, and artificial chromosomes. Of these, the most commonly used vectors are plasmids.

So, the correct option is 'a plasmid or other agent used to transfer DNA into a living cell'.