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NEET BIOLOGYMedium

Given below are two statements: Statement I: DNA polymerases catalyse polymerisation only in one direction, that is 5' →3' Statement II: During replication of DNA, on one strand the replication is continuous while on other strand it is discontinuous. In the light of the above statements, choose the correct answer from the options given below:

A

Both Statement I and Statement II are correct.

B

Both Statement I and Statement II are incorrect.

C

Statement I is correct but Statement II is incorrect.

D

Statement I is incorrect but Statement II is correct.

Step-by-Step Solution

According to the text, the DNA-dependent DNA polymerases catalyse polymerisation only in one direction, that is 5' → 3' . Because the two strands of DNA run antiparallel, this creates a complication at the replication fork. Consequently, on one strand (the template with polarity 3' → 5'), the replication is continuous, while on the other (the template with polarity 5' → 3'), it is discontinuous .

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