Multiple choice

The mutagen ethidium bromide acts as a

  1. Deaminating agent

  2. Intercalating agent

  3. Alkylating agent

  4. Base analogue

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

Ethidium bromide is a planar molecule that inserts itself between adjacent base pairs in the double helix of DNA, acting as a classic intercalating agent. This distorts the DNA helix and can cause frameshift mutations during replication.