The technique used to copy DNA for DNA fingerprinting is a Polymerase chain reaction. The correct option is D.
What is DNA fingerprinting?
DNA fingerprinting is a laboratory technique by which matching the DNA sequence is done to the given DNA sequence. It is used in matching the DNA at any crime scene.
The polymerase chain reaction is the process of making several copies of DNA. It is done by the PCR machine. When there is a little amount of sample DNA is present, it is increased by PCR.
Thus, the correct option is D. Polymerase chain reaction regarding copying DNA for DNA fingerprinting.
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