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Which one is a true statement regarding DNA polymerase used in PCR ? (1) It remains active at hight temperature (2) It is used to ligate introduced DNA in recipient cells (3) It serves as a selectable marker (4) It is isolated from a virus

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Which one is a true statement regarding DNA polymerase used in PCR ?
(1) It remains active at hight temperature
(2) It is used to ligate introduced DNA in recipient cells
(3) It serves as a selectable marker
(4) It is isolated from a virus
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(2) It is used to ligate introduced DNA in recipient cells
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