After 4 cycles of amplification the DNA molecules we have at the end would be - 2 * 24 = 32.
PCR or polymerase chain reaction is a method to amplify DNA molecules making it a very useful for scientists to amplify small amount of DNA to a large enough amount to study it in detail.
The formula for calculating the DNA molecules at the end of a PCR reaction is - 2n
where n is the number of cycles. (as at each cycle the amount of DNA gets doubled).
Since we are having two molecules of DNA to start with, we will be using 2 * 2n.
After 4 cycles of amplification the DNA molecules we have at the end would be - 2 * 24 = 32.
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