A) thermophilic fungus
B) mesophilic fungus
C) thermophilic bacterium
D) halophilic bacterium
Correct Answer: C
Solution :
Taq polymerase used in PCR is obtained from the thermophilic bacterium, Thermus aquaticus. This produces two double- stranded DNA molecules, which following their heat- denaturation, can serve as template for another cycle of amplification.
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