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The deficiency of 3’→5’ exonuclease activity of DNA polymerase in E. coli would slow down the synthesis of DNA, while the fidelity of DNA would not be affected.()

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Both two strands in the telomere can be synthetized by its telomerase using its RNA as template.()

In DNA replication, the sequence of nascent DNA strand is the same as the template when reading in 5'→3' direction.()

Semi-conservative replication process means that DNA parental strands are used as template of daughter strands, and the nascent DNA molecule consists of an old parental strand as well as a new daughter strand.()

The sequence of DNA template is ATAGC, and the sequences of synthetic nascent DNA is:()

A. 5′-GCTAG-3′;
B. 5′-GCTAT-3′;
C. 5′-GCATA-3′;
D. 5′-GATAT-3′;
E. 5′-TATCG-3′