Why Is Taq Polymerase Used in a Polymerase Chain Reaction

question 24

Multiple Choice

Why is Taq polymerase used in a polymerase chain reaction (PCR) ?

• A)Taq polymerase has proofreading activity and thus makes fewer errors than other DNA polymerases.
• B)Taq polymerase is more efficient than other DNA polymerases.
• C)Taq polymerase can produce DNA from an RNA template,unlike other DNA polymerases.
• D)Unlike other DNA polymerases,Taq polymerase is not inhibited by dideoxy nucleotides.
• E)Unlike other DNA polymerases,Taq polymerase is heat stable and survives the 94 degree denaturation step in PCR.

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