Starting with a single piece of dsDNA,after 3 PCR cycles there are
A)2 additional pieces of dsDNA.
B)4 additional pieces of dsDNA.
C)8 additional pieces of dsDNA.
D)16 additional pieces of dsDNA.

Question

Quizplus · Accepted Answer

PCR (Polymerase Chain Reaction) is a technique used to amplify a specific segment of DNA. During PCR, the amount of DNA doubles with each cycle. Therefore, after the 1st cycle, there will be 2 copies of DNA; after the 2nd cycle, there will be 4 copies of DNA, and so on. As there are 3 PCR cycles, the amount of DNA will be multiplied by 2 for each of these cycles (2x2x2 = 8). Therefore, after 3 PCR cycles, there will be a total of 8 pieces of dsDNA.

Starting with a Single Piece of DsDNA,after 3 PCR Cycles