PCR employs a heat-stable DNA polymerase called ________,originally isolated from a bacterium that lives in hot springs at temperatures higher than 90°C.

Question

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Taq polymerase is the heat-stable DNA polymerase used in PCR which is isolated from the bacterium Thermus aquaticus that can withstand high temperatures up to 95°C, and is used for the extension step of PCR. The other options, such as DNA polymerase I, reverse transcriptase, and poly(A) polymerase, are not typically used in PCR reactions.

PCR Employs a Heat-Stable DNA Polymerase Called ________,Originally Isolated from a Bacterium