Question

In recombinant DNA methods, the term ‘vector’ refers to ______.

Options

• a DNA probe used to locate in a particular gene

• a plasmid or other agent used to transfer DNA into a living cell

• enzyme that cuts DNA into restriction fragments

• ‘sticky end’ or a DNA fragment

Answer 1

In recombinant DNA methods, the term ‘vector’ refers to a plasmid or other agent used to transfer DNA into a living cell.

Explanation:

Vectors are DNA molecules that carry foreign DNA into host cells for replication and expression. Examples include bacterial plasmids, bacteriophages, and Ti plasmids. They have features like an origin of replication, selectable markers, and cloning sites to facilitate gene cloning and selection of recombinants.