If a single DNA molecule is amplified by PCR, how many DNA molecules will there be after six cycles?
A)6
B)12
C)24
D)64
E)86
Blooms Level 3: Apply

Question

Quizplus · Accepted Answer

The number of DNA molecules doubles after each cycle of PCR. So after 1 cycle, there will be 2 DNA molecules; after 2 cycles, there will be 4 DNA molecules; after 3 cycles, there will be 8 DNA molecules; after 4 cycles, there will be 16 DNA molecules; after 5 cycles, there will be 32 DNA molecules; and after 6 cycles, there will be 64 DNA molecules. Therefore, the answer is D, 64.

If a Single DNA Molecule Is Amplified by PCR, How