The base-pairing error rate remains low during replication because
A)DNA repair mechanisms can fix the mispaired bases.
B)bases that are mispaired can excise themselves.
C)UV light radiation corrects any base mispairs.
D)mispaired bases cause a cell to die before replication is complete.
E)None of these; base-pairing errors are not possible

Question

Quizplus · Accepted Answer

The low error rate is maintained during replication because DNA repair mechanisms can fix the mispaired bases. These mechanisms ensure that any base-pairing errors are corrected before replication is complete, resulting in a high level of fidelity in DNA replication. Bases that are mispaired cannot excise themselves, and UV light radiation does not correct base mispairs. Furthermore, mispaired bases do not cause a cell to die before replication is complete, as the extensive DNA repair mechanisms help maintain fidelity in the replication process.

The Base-Pairing Error Rate Remains Low During Replication Because