Practicing Success

Target Exam

CUET

Subject

Biology

Chapter

Biotechnology -Principles and Processes

Question:
Which among the following is used to visualise the separated DNA fragments after staining ?
Options:
Acetocarmine .
Ethidium bromide .
Methyl orange .
Aniline blue .
Correct Answer:
Ethidium bromide .
Explanation:
The separated DNA fragments can be visualised only after staining the DNA with a compound known as ethidium bromide followed by exposure to UV radiation (you cannot see pure DNA fragments in the visible light and without staining).