katiemizell2169 katiemizell2169

21-12-2022
Biology

Answered

Dna replication happens very fast. In humans, 50 nucleotides are added per second on the new dna strand. How is this process done with little or no error at such a fast rate?.

Answer :

RioSengupta RioSengupta

24-12-2022

DNA polymerase proofreads the newly created DNA, which is the right response.

What is DNA replication?

DNA replication is highly accurate. It simply means that little to no error occurs when deoxy ribonucleotides are added to the growing DNA strand during DNA replication.

This is due to the fact that DNA polymerase 3 has 3"–5" proofreading endonuclease activity, meaning it has the ability to read newly synthesized DNA strands in a 3"–5" direction in order to ensure that all nucleotides are correctly incorporated.

When an incorrect nucleotide is accidentally added to the newly synthesized daughter DNA strand, DNA replication stops until the incorrect base is taken out and replaced with the correct base.

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