e (1).
             Recombinant DNA allows scientists to isolate DNA, transport it to other organisms, and study the effects in the DNA in a new organism. This is done using enzymes to cut the DNA into fragments. The enzymes used are called restriction enzymes, which are those enzymes that selectively recognize and degrade foreign DNA. Selected fragments of cut DNA are then placed into a vector to carry foreign DNA sequences from one host cell to another. The small, circular DNA molecules found in bacteria, called plasmids, are a common vector for this technique (3). Plasmids generally replicate independent of the chromosomal
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