What is a Common Trigger for the Bacterial SOS Response

Question

What is a common trigger for the bacterial SOS response?
A)thymine starvation
B)DNA cross-linking agents such as mitomycin C
C)ultraviolet radiation
D)mutation of DNA replication genes
E)all of the above

Accepted Answer

Thymine starvation can lead to replication forks stalling and DNA damage. DNA cross-linking agents like mitomycin C can directly damage the DNA, leading to DNA damage. Ultraviolet radiation can damage DNA and trigger the SOS response. Mutation of DNA replication genes can also lead to DNA damage and trigger the SOS response. Therefore, all of the above are common triggers for the bacterial SOS response.