A)plasmid.
B)retrovirus.
C)protoplast.
D)virus.
E)chromosomE.

A)One resulting from laboratory research.
B)One which contains a foreign gene and is free-living in the environment.
C)One which acts as the donor for DNA to be moved into another organism.
D)One produced through polymerase chain reaction.
E)One produced by cloning a mutant cell.

A)cut DNA into many fragments
B)separate fragments of DNA by their length and electrical charge
C)carry DNA into a new cell
D)make millions of copies of specific segments of DNA
E)link together newly joined fragments of DNA