A) conservative
B) non-conservative
C) semi-conservative
D) cyanobacteria
Correct Answer: C
Solution :
Replication is very basic of life and takes place during the S-phase (growth phase) of interphase in cell cycle. It is semi-conservative process, ie, out of the 2 strands, present in one molecule, one is the old strand and other is the new one. The semi-conservative nature of DNA replication was proved by the experiment of Meselson and Stahl (1958). In prokaryotes, the process of replication is catalysed mainly by the enzyme DNA polymerase along with certain other enzymes.
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