Ultraviolet (UV) radiation is mutagenic.

What kind of DNA lesion does UV energy cause?

Key Concepts

DNA Lesions

DNA lesions are structural alterations in the DNA molecule that can disrupt its normal function. These lesions can arise from various sources, including environmental factors like UV radiation, which can cause specific types of damage to the DNA structure.

Ultraviolet (UV) Radiation

Ultraviolet radiation is a form of electromagnetic radiation with wavelengths shorter than visible light. It is known to cause damage to DNA by inducing the formation of pyrimidine dimers, which are covalent linkages between adjacent thymine or cytosine bases, leading to replication errors if not repaired.

DNA Repair Mechanisms

DNA repair mechanisms are cellular processes that correct DNA damage to maintain genomic integrity. In the case of UV-induced lesions, nucleotide excision repair is a key pathway that recognizes and removes damaged sections of DNA, allowing for proper repair and restoration of the original DNA sequence.