Which best describes step 3 in the diagram?
Restriction enzymes cut the DNA into fragments; the fragments join with the host DNA to create recombinant DNA.
Recombinant DNA is inserted into a biological vector; the vector houses the recombinant DNA and is capable of creating copies of DNA for itself and the recombinant DNA.
Cloning of the recombinant DNA occurs; the DNA is cloned in the biological vector to create more DNA for use in the host.
Recombinant DNA is inserted into a mechanical vector; the mechanical vector allows the DNA to be inserted into the DNA clone for use in the host.