Gujarati
5.Molecular Basis of Inheritance
normal

During replication of a bacterial chromosome $DNA$ synthesis starts from a replication origin site and

A

Moves in one direction of the site

B

Moves in bi-directional way

C

$RNA$ primers are involved

D

Is facilitated by tolemerase

(AIPMT-2004)

Solution

(b) The two template strands of a replicating $DNA$ molecule are antiparallel $(5' \to 3'$ and $3' \to 5')$at the unwinding replication fork ($y$-shaped). In bacteria and many $DNA$ phages this extending is bi-directional.

Standard 12
Biology

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