Multiple choice

Which of the following form(s) DNA cross links to induce mutation?

  1. Ochratoxin A

  2. Psoralens

  3. Ethidium bromide

  4. Bromodeoxyuridine

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Psoralens are natural compounds (furocoumarins) present in plants. They form DNA cross links to induce mutation. The crosslinking reaction by psoralens targets TA sequences intercalating in DNA and linking one base of the DNA with the one below it.