Question

If PCR synthesis a DNA
copy within 8 minutes so
What will be the total
number of DNA after 56 minutes
a). 512 b). 256
C). 128 d). 64
​

Answer 1

Explanation:

Because a heat-resistant polymerase is used, the reaction can be repeated continuously without addition of more enzyme. Each cycle doubles the copy number of the amplified gene: ten cycles ideally produces 2 4 8 16 32 64 128 256 512 1,024 (210) copies. Thus, 30 cycles yields a (210x3) = 109-fold amplification.

Answer 2

Answer:

All you need is your DNA, primers (small pieces of DNA) complementary to two sites in your DNA (one on each strand), a heat-stable polymerase (AN enzyme that can make DNA ... The number of double-stranded DNA pieces is doubled in each cycle so that after n cycles you have 2^n (2 to the n: THE power) copies of DNA.

Explanation: