Question

The PCR product reaches a certain length because of....

1) The amplification of the target DNA sequence
2) The addition of primers
3) The denaturation of DNA
4) The annealing of primers

Answer 1

The PCR product reaches a certain length because of the 1) amplification of the target DNA sequence and the addition of primers.

Step-by-step explanation:

PCR (Polymerase Chain Reaction) is a technique used to amplify a specific DNA sequence. The PCR product reaches a certain length due to the amplification of the target DNA sequence and the addition of primers. During the PCR cycle, the target DNA is denatured (separated into single strands) and then the primers anneal (bind) to complementary sequences on the single-stranded DNA. The DNA polymerase enzyme extends from the primers, creating new DNA fragments, resulting in the desired product.