First slide

Replication

Question

A leading strand is

Easy

A

chain of DNA which is continuously formed.
B

formation of chain which polymerises in 3’ to 5’ direction.
C

chain of DNA which is discontinuously formed.
D

chain of DNA contains Okazaki fragments.

Solution

Leading strand has the polarity 3' → 5' and therefore the replication is continuous on it because DNA-dependent DNA polymerases catalyse polymerisation only in one direction, that is 5' → 3' .

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