DNA damage brought on by a variety of natural and artificial agents elicits a wide variety of cellular responses involving numerous signaling pathways. In addition to the activation of DNA repair mechanisms, there can be activation of pathways leading to apoptosis (programmed cell death) and cell-cycle arrest. Why would apoptosis and cell-cycle arrest often be part of a cellular response to DNA damage?

Video transcript

Hello everyone and welcome to today's video. So any alteration two DNA that alters its cutting characteristics or prevented from performing normally during transcription or replication is referred to us. We'll remember that what this question is describing is for example a mutation. So a mutation or a change to D. N. A. Is going to alter its coding characteristic or prevented from performing normally doing transcription or replication. Remember that mutations are types of D. N. A alterations or D. N. A damage. This is how mutations usually arrive. So for example if we have radiation affecting our DNA, this will incur in DNA damage via mutations. So because of this answer choice C. Is going to be there correct answer to our question. DNA damage is any alteration to the Anita alters its coding characteristics or prevents it from performing normally. I really hope this video helped you and I want to see you on the next one.