In DNA technology, the term vector can refer to

A. The enzyme that cuts DNA into restricted fragments

B. the sticky end of a DNA fragment

C. a SNP marker

D. a plasmid used to transfer DNA into a living cell

Which of the following tools of DNA technology is incorrectly paired with its use?

A. electrophoresis-separation of DNA fragments

B. DNA ligase-cutting DNA, cutting sticky ends of restriction fragments

C. DNA polymerase

D. reverse transcriptase