Ultra-violet light causes
A. Formation of pyrimidines
B. Sticky metaphases
C. Photodynamic action
D. Destruction of hydrogen bonds between complementary DNA stands
Answer: Option D
Solution(By Examveda Team)
Ultra-violet light causes the destruction of hydrogen bonds between complementary DNA stands.Ultraviolet (UV) is a form of electromagnetic radiation with wavelength shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight and constitutes about 10% of the total electromagnetic radiation output from the Sun.
Short-wave ultraviolet light damages DNA and sterilizes surfaces with which it comes into contact. The most deadly form of skin cancer, malignant melanoma, is mostly caused by UV radiation.
This Question Belongs to Agriculture >> Environmental Science In Agricultural
Related Questions on Environmental Science in Agricultural
A. Desert
B. Ocean
C. Tundra
D. Rain forest
Adherence of two-children norm shall help in
A. Improving food web
B. Checking pollution
C. Stabilising ecosystem
D. Fertility of soil
The method for converting combustible gaseous compounds CO2 and H2O, halogen HX and S to SO2, is
A. Thermal Oxidation method
B. Adsorption method
C. Chemical conversion method
D. Global warming
Join The Discussion