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

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

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

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

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