DNA Replication
Which of the following lacks 3'-5' exonuclease activity?

Short fragment of DNA polymerase I
T4 DNA ligase
All of these
Taq DNA polymerase

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DNA Replication
The replication of chromosomes by eukaryotes occurs in a relatively short period of time because

each chromosome contains multiple replicons
the eukaryotes have more amount of DNA for replication
eukaryotic DNA is always single stranded
the eukaryotic replication machinery is 1000 times faster than the prokaryotes

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