The damage caused by ultraviolet radiation is
A) repaired during transcription.
B) repaired during translation.
C) cut out and replaced.
D) never repaired.
E) repaired by DNA replication.

Question

Quizplus · Accepted Answer

The damage caused by ultraviolet radiation is typically in the form of thymine dimers, where two adjacent thymine bases on the same strand of DNA become covalently bonded to each other. These dimers can interfere with normal DNA replication and transcription, leading to mutations and potential cell death. In order to correct this damage, a process called nucleotide excision repair cuts out the damaged section of DNA and replaces it with new, undamaged nucleotides. Therefore, option C (cut out and replaced) is the best choice.

The Damage Caused by Ultraviolet Radiation Is