Which technique is preferred when investigators are trying to DNA fingerprint an individual?
A) short tandem repeat (STR)
B) polymerase chain reaction (PCR)
C) recombinant DNA (rDNA)
D) gene cloning
E) none of these

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Short tandem repeat (STR) is the method of choice when investigators are trying to DNA fingerprint an individual because it doesn't require the use of restriction enzymes. Polymerase chain reaction (PCR) is used to create billions of copies of segments of DNA. Recombinant DNA (rDNA) is the blending together of DNA from different organisms. Gene cloning is the production of identical copies of a single gene.Bloom's

Which Technique Is Preferred When Investigators Are Trying to DNA