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Q.

On which strand of DNA, replication is continuous?

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a

5' → 3' polarity strand

b

3' → 5' polarity strand

c

3' → 2' polarity strand

d

3' → 4' polarity strand

answer is B.

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Detailed Solution

The replication is continuous on 3' → 5' polarity strand because DNA polymerase can catalyse polymerisation in 5' → 3' direction only and we know that DNA strands are complementary to each other. Thus, continuous synthesis occurs in 3' → 5' direction.

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