Question

The goal of the polymerase chain reaction is to

• A. Speed up protein synthesis for the production new drugs.
• B. Create many copies of a DNA molecules which is initially very rare.
• C. Create many copies of messenger RNA molecules.
• D. Investigate the properties of organisms which normally grow at very high temperatures.
• E. Create DNA probes.

Answer 1

Answer: (B)

Create many copies of a DNA molecules which is initially very rare.

Polymerase chain reaction is a technique for amplifying DNA sequences in vitro by separating the DNA into two strands and incubating it with oligonucleotide primers and DNA polymerase. It can amplify a specific sequence of DNA as many as one billion times and is important in biotechnology, forensics, medicine and genetic research.

Thus, the correct answer is option B.