Question

Collapses in the replication fork can be repaired through ______________ of the correct sequence derived from the non-damaged replicated copy?

1) DNA repair mechanisms
2) DNA replication mechanisms
3) DNA transcription mechanisms
4) DNA translation mechanisms

Answer 1

Collapses in the replication fork can be repaired through DNA repair mechanisms. These mechanisms involve recognition and removal of damaged bases, followed by insertion of correct bases. The correct answer is 1).

Step-by-step explanation:

The correct answer is 1) DNA repair mechanisms.

Collapses in the replication fork, which occur during DNA replication, can be repaired through DNA repair mechanisms. These mechanisms involve the recognition and removal of damaged bases by specific enzymes, followed by the insertion of correct bases to restore the correct sequence.

For example, one DNA repair mechanism is base excision repair, where specific DNA glycosylases catalyze the hydrolysis of damaged bases. This allows for the removal of the damaged base and subsequent insertion of the correct base to repair the replication fork collapse.