If all of the PCR products of a DNA sequence are 4000 bp,then the DNA sequence that was amplified must have been 8000 bp.

Question

Quizplus · Accepted Answer

The length of the PCR product is not necessarily equal to the length of the original DNA sequence. PCR amplifies a specific region of DNA and the length of the PCR product depends on the size of the amplified region and the length of the primers used for amplification. Therefore, it is not possible to determine the length of the original DNA sequence based solely on the length of the PCR product.

If All of the PCR Products of a DNA Sequence