What reduces errors in DNA replication?

Answer 1

There are an average of 6 errors for every cell division, most of which either occur in the 95% percent of DNA that does not code for proteins or are relatively unharmful substitution mutations.

Answer 2

Replication of DNA must be error free because if there is an error, then there will be a mutation on the gene. It is not preferred to have mutations because an organism might die if it has more than 3 mutations. It affects the gene adversely. There might be some complications in the gene or the chromosome and hence cause disorders or certain syndromes.

Answer 3

Probably because replication implies the cell is making an exact copy of itself. At the moment of replication, each component of the DNA splits in two - therefore each copy should be identical. Mistakes usually happen due to external influences.

Answer 4

DNA polymerase enzymes have proofreading capabilities that can correct errors in DNA replication by removing incorrect nucleotides and replacing them with the correct ones. Additionally, the repair mechanisms such as mismatch repair and base excision repair help to fix any mistakes that may have occurred during replication, further reducing errors in the DNA sequence.

Answer 5

DNA polimerase also acts as a correction mecanism for the strands it helps assemble.

Answer 6

A DNA molecule seldom replicates incorrectly because of its corrective mechanisms. One mechanism is that the DNA polymerase III checks the work as it creates the DNA.

Answer 7

DNA polymerase "proofreads" as it goes, discarding mismatched nucleotides and inserting correct ones.