Taylor conducted the experiments to prove semi conservative mode of chromosome replication on
Vinca rosea
Vicia faba
Drosophila melanogaster
E. coli.
Synthesis of $DNA$ takes place by
Which of the following figures correctly represents the replication fork formed during $DNA$ replication
Which one of the following is called polynucleotide joining enzyme
Escherichia coli fully labelled with $15 \mathrm{~N}$ is allowed to grow in $14 \mathrm{~N}$ medium. The two strands of $DNA$ molecule of the first generation bacteria have
During $DNA$ replication which of the following does not act as substrates?