Question

What is the function of the polymerase chain reaction in genetic engineering?

• A. Cut DNA into many fragments
• B. Carry DNA into a new cell
• C. Link together newly joined fragments of DNA
• D. Make millions of copies of a specific segment of DNA

Answer 1

Answer: (D)

Make millions of copies of a specific segment of DNA

Polymerase Chain Reaction is a method widely used to make many copies of a specific DNA segment. Using PCR, a single (or more) copy of a DNA sequence is exponentially amplified to generate thousands to millions of more copies of that particular DNA segment.

So, the correct option is 'Make millions of copies of a specific segment of DNA'.