The unusual property of Taq-polymerase that is critical to PCR is its:

Ability to use dNTPs as substrate

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Ability to use RNA primer

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Thermostability

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Ability to use RNAs as template

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Solution

The correct option is C Thermostability
The function of Taq DNA polymerase in PCR is to amplify or synthesise DNA or gene of interest for various downstream application. It is a type of thermostable DNA polymerase which can work at higher temperature as well. Its thermostable property is critical in PCR.

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