During replication of a bacterial chromosome, DNA synthesis starts from a replication origin site and
Correct answer: D. moves in bidirectional way.
- A. RNA primers are involved
- B. is facilitated by telomerase
- C. moves in one direction of the site
- D. moves in bidirectional way.
Explanation
During replication of a bacterial chromosome, DNA synthesis starts from a replication origin site and moves in a bidirectional way. This means that replication begins at the origin of replication and proceeds in two directions along the chromosome, creating two replication forks. This bidirectional replication allows for the efficient and rapid duplication of the entire bacterial chromosome. The other options can be explained as follows: RNA primers are involved: In DNA replication, RNA primers are indeed involved. These primers provide a starting point for DNA polymerase to initiate DNA synthesis. However, the direction of replication is not determined by the presence of RNA primers. Is facilitated by telomerase: Telomerase is an enzyme involved in the maintenance of eukaryotic chromosome ends (telomeres) and is not typically found in bacteria. It is not directly related to the initiation or direction of bacterial DNA replication. Moves in one direction of the site: DNA replication in bacteria is bidirectional, meaning that it proceeds in two directions away from the origin site. It does not occur in only one direction. In summary, the correct statement is that DNA synthesis during bacterial chromosome replication starts from a replication origin site and moves bidirectionally.
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