STANDARD Zoology PCR MCQ Question

In PCR (Polymerase Chain Reaction), each cycle theoretically doubles the amount of DNA, leading to an exponential increase. After 30 cycles, the formula for amplification is 2^30, which equals approximately 1 billion (1,073,741,824) copies of the original DNA. Other options are incorrect because 1 million (10^6) and 1000 (10^3) are significantly lower than the actual amplification, and 100 (10^2) is also far from the exponential growth achieved in 30 cycles. Thus, the vast increase in DNA quantity highlights the efficiency of PCR in molecular biology.