Question

Taq dna polymerase differs from the klenow fragment in having:

Answer 1

Here's probably the biggest difference: T4 DNA polymerase is of viral origin, while the Klenow fragment of E. coli DNA polymerase I (frequently called just "Klenow") is from a bacterium. 

Answer 2

Taq dna polymerase differs from the klenow fragment in having:

5 to 3 exonuclease domain.

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