Name a few enzymes involved in $DNA$ replication other than $DNA$ polymerase and ligase. Name the key functions for each of them.

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$(i)$ Helicase - opens the helix $(ii)$ Topoisomerases - removes the super coiling of $DNA$ $(iii)$ Primase - synthesises $RNA$ primer $(iv)$ Telomerase - to synthesises the $DNA$ of telomeric end of chromosomes

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Given below are two statements :

Statement $I:$

DNA polymerases catalyse polymerisation only in one direction, that is $5^{\prime} \rightarrow 3^{\prime}$

Statement $II:$

During replication of $DNA$, on one strand the replication is continuous while on other strand it is discontinuous.

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  • [NEET 2022]

$DNA$ repairing is done by