How are errors minimized in the replication of DNA?
A) They aren't minimized, which is why there are so many mutations.
B) Replication is completely accurate the first time around.
C) Replication is mostly accurate, but there is proofreading to improve the fidelity.
D) Replication is accurate most of the time, but the DNA is fixed once the new cell is completely formed.
E) Replication is not very accurate at all, and it doesn't seem to matter much.

Question

Quizplus · Accepted Answer

Replication is mostly accurate, but there is a proofreading mechanism that helps to improve the fidelity. During DNA replication, enzymes called polymerases add nucleotides to the growing DNA strand, checking to make sure each nucleotide is correct before adding the next one. If a mistake is made, the polymerase can backtrack and correct the error. Additionally, there are other enzymes that can repair any damage that occurs to the DNA after replication. While errors can still occur, these mechanisms help to minimize mistakes and maintain the integrity of the genome.

How Are Errors Minimized in the Replication of DNA