Question

DNA strands on a gel stained with ethidium bromide when viewed under UV radiation, appear as :

• A. Yellow bands
• B. Bright orange bands
• C. Dark red bands
• D. Bright blue bands

Answer 1

Answer: (B)

Bright orange bands

Answer 2

DNA strands on a gel stained with ethidium bromide when viewed under UV radiation appear as bright orange bands. They appear orange because ethidium bromide releases an orange fluorescence at 605nm when exposed to UV light.
So, the correct option is (B): Bright orange bands.