Multiple choice general knowledge science & technology

DNA band can be seen using which rays.

  1. Infrared rays

  2. UV rays

  3. Violet rays

  4. X-rays
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

DNA bands are visualized using ultraviolet (UV) rays because DNA staining dyes like ethidium bromide intercalate between DNA bases and fluoresce when exposed to UV light. This fluorescence makes the DNA bands visible in gel electrophoresis, allowing researchers to analyze DNA fragments.

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