Biochemistry Excessive ultraviolet [uv) radiation is harmful to life’. The damage caused to the biological systems by ultraviolet radiation. A Inhibition of DNA synthesis B Formation of thymidine dimmers C Ionization D DNA fragmentation 💡 Explanation Excessive ultraviolet [uv) radiation is harmful to life'. The damage caused to the biological systems by ultraviolet radiation. ✓ Correct Answer: B. Formation of thymidine dimmers