The Nuclear DNA Polymerases in Human Cells …

The nuclear DNA polymerases in human cells …

A) polymerize about 1000 nucleotides per second during DNA replication in vivo.
B) are incapable of 3′-to-5′ exonuclease activity.
C) are capable of 3′-to-5′ DNA polymerase activity.
D) have a single active site that is used for both polymerization and editing.
E) are unable to initiate polymerization de novo (i.e. in the absence of a primer) .