Taq polymerase was isolated from a thermophile and is used in the polymerase chain reaction (PCR) technique because it does not become inactivated at high temperatures.

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Taq polymerase is isolated from Thermus aquaticus, a thermophilic bacterium that lives in hot springs. It has a high optimal temperature and does not become inactivated at the high temperatures used during PCR, making it an essential enzyme for this technique.

Taq Polymerase Was Isolated from a Thermophile and Is Used