What is one reason why the polymerase chain reaction (PCR)is so useful for DNA fingerprinting?
A) It can produce millions of copies from tiny amounts of DNA.
B) It can be used to compare DNA from different individuals.
C) It can identify the complete sequence of a gene.
D) It can allow scientists to visualize the DNA of specific individuals.

Question

Quizplus · Accepted Answer

PCR allows for the amplification of a small amount of DNA into millions of copies, which is essential for DNA fingerprinting since the amount of DNA in a biological sample is often limited. This amplification makes it possible to obtain enough DNA to run tests and analyze variations in DNA sequences in different individuals.

What Is One Reason Why the Polymerase Chain Reaction (PCR)is