Question

Many copies of a DNA molecule in test tube are produced by

• A. Polymerase chain reaction (PCR)
• B. Molecular chain reaction (MCR)
• C. Ephemeral chain reaction (ECR)
• D. All of the above

Answer 1

The correct option is A Polymerase chain reaction (PCR)

PCR (Polymerase Chain Reaction) is a method to amplify the single copy of DNA into the thousand copies. In this method, DNA polymerase synthesizes new strand of DNA complementary to the offered template strand.

Therefore, the correct answer is option A.