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Question

During replication of a bacterial chromosomes DNA synthesis starts from a replication origin site and:

A
is facilitated by telomerase
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B
moves in one direction
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C
moves in bi-directional way
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D
RNA primers are involved
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Solution

The correct option is C moves in bi-directional way
The bacterial chromosome is circular and hence the replication process proceeds in both directions simultaneously. While the leading strand is synthesised in the 5’ - 3’ direction, the lagging strand is synthesised in the 3’ - 5’ direction with the help of Okazaki fragments. The beginning of the leading strand has a RNA primer to initialize the replication and the lagging strand has many RNA primers which give rise to many Okazaki fragments.

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