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Molecular Basis of Inheritance question

2022 · Q23
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Molecular Basis of Inheritance question

2022 · Q23

NEETBiologyMolecular Basis of InheritanceMCQ+4 / −1

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:

  1. A
    Statement I is incorrect but Statement II is correct
  2. B
    Both Statement I and Statement II are correct
  3. C
    Both Statement I and Statement II are incorrect
  4. D
    Statement I is correct but Statement II is incorrect
View written solutionFree

Correct answer: B

The DNA-dependent DNA polymerases catalyse polymerisation only in one direction, that is 5' $\to$ 3'. This creates some additional complications at the replicating fork. Consequently, on one strand (the template with polarity 3' $\to$ 5'), the replication is continuous, while on the other (the template with polarity 5' $\to$ 3'), it is discontinuous.

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