First slide

Replication

Question

The function of enzyme DNA polymerase-I is to

Easy

A

prevent recoiling of the two strands.
B

unwind the DNA helix and unzips the the two strands of DNA.
C

removing RNA primer from DNA and filling the gap with the respective nucleotides of DNA.
D

releasing the tension arises due to supercoiling of the DNA.

Solution

The enzyme DNA polymerase-I functions as exonuclease from 5' to 3'. It separates RNA primer from DNA and also fills the gap with the nucleotides of DNA due to its exonuclease activity from 5' to 3'. It is also known as DNA repair enzyme due to its exonuclease activity from 3' to 5'.

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