Question

Which of the following can cause DNA damage and mutations in humans ?

• A. Absorption of UV-A and UV-B
• B. Absorption of UV-B
• C. Absorption of UV-A
• D. Absorption of UV-A and UV-C

Answer 1

Answer: (B)

Absorption of UV-B

Absorption by UV-B radiation causes pyrimidine dimerisation. That causes DNA damage and mutations in humans.

The pyrimidine or thymine dimerisation leads to mutation.

So, the correct option is 'Absorption of UV-B'.