Question

How does the polymerase chain reaction make DNA fingerprinting more reliable?

A. It allows scientists to use transgenic organisms in testing.
B. It allows scientists to use RNA instead of DNA for testing.
C. It allows scientists to quickly make many copies of DNA.
D. It allows scientists to use bacteria to produce copies of DNA.

Answer 1

The polymerase chain reaction makes DNA fingerprinting more reliable because it allows scientists to quickly make many copies of DNA the answer is C

Answer 2

C. It allows scientists to quickly make many copies of DNA.

Step-by-step explanation:

• Polymerase chain reaction (PCR) is a technique using which several copies of a DNA template can be made.
• For DNA fingerprinting the DNA is usually obtained from samples such as hair, saliva, blood, etc.
• The amount of DNA in samples such as hair or saliva is not enough and thus, amplification of the amount using PCR allows a much reliable DNA fingerprinting to take place.