Question

Proofreading of newly-synthesized DNA is important because __________.A) DNA pol III has a high error rate during replicationB) The cell will invariably die if any mutations occur during replicationC) A high fidelity in the copying of DNA is necessary for good heredityD) Any protein made from mutated DNA will not function properly

Answer 1

Answer: D) Any protein made from mutated DNA will not function properly

Explanation: During replication, DNA polymerase double-checks and removes every newly added wrong nucleotide. This is to maintain high fidelity because if a mutated DNA is synthesized during replication, it will also lead to synthesis of an RNA with an altered nucleotide sequence during transcription and consequently lead to the synthesis of a protein that will not function well during translation.