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

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Taq polymerase is the heat-stable DNA polymerase used in PCR. It was isolated from the bacterium Thermus aquaticus, which lives in hot springs at temperatures higher than 90°C. Taq polymerase can withstand the high temperatures used in PCR cycles, enabling the reaction to proceed through multiple rounds of denaturation and annealing/extension.

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