EtBr Usage

Q. is used for staining to visualise DNA in a gel.

1. NaOH
2. EtBr
3. HCl
4. Agarose

Q. What is the role of EtBr in recombinant DNA technology?

1. It separates the DNA from the gel matrix
2. It helps the DNA move through the gel matrix
3. It sticks to DNA and fluoresces under UV rays
4. It sticks to DNA and imparts a deep red color

Q. The DNA fragments separated on an agarose gel can be visualised after staining with:

1. Bromophenol blue
2. Acetocarmine
3. Aniline blue
4. Ethidium bromide