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Question

DNA polymerase enzyme used in PCR is isolated from

A
Thermus aquaticus
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B
E. coli
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C
Salmonella typhimurium
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D
Agrobacterium tumifaciens
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Solution

The correct option is A Thermus aquaticus
Taq polymerase is a thermostable DNA polymerase I obtained from the thermophilic bacterium Thermus aquaticus. It is used in PCR.

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