The thermostable enzymes, ‘Taq’ and ‘Pfu’, isolated from thermophilic bacteria are

RNA polymerases

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DNA polymerases

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restriction endonucleases

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DNA ligases

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Solution

The correct option is B DNA polymerases
‘Taq’ and ‘Pfu’ are thermostable enzymes, which are isolated from thermophilic bacteria. They are DNA polymerases in nature, which are widely used in polymerase chain reactions. Since they are thermostable, they can survive the high temperature of PCR cycles and need not be replaced through several subsequent amplification cycles.

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