Question

The source of Taq polymeraise used in $PCR$ is a

• A. thermophilic fungus
• B. mesophilic fungus
• C. thermophilic bacterium
• D. halophilic bacterium

Answer 1

Answer: (C)

thermophilic bacterium

Answer 2

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.