Question

q) You make an agarose gel with ethidium bromide (EtBr) as a visualizing agent. You use this gel to isolate DNA you want to use for a transgenic bacteria. You will purify the DNA out of the gel before inserting it into a plasmid. What might be present in the DNA? Will this cause obstacles for your experiment?

Answer 1

ANS)

WHAT MIGHT BE PRESENT IN DNA:

* REMNANTS of EtBr after purification

CONVENTION:-

Amid the cleaning, as you have a high grouping of denaturating specialists as guanidine hydrochloride the EtBr goes away. But it is anything but difficult to test if EtBr is still there. you could apply a fluid of your iteration in agarose gel and, without strain, it, try to envision the band at 302nm illumination.

Here because of the nearness of PHOSPHODIESTER BOND PO3 2-in the DNA it is in NEGATIVELY charged.

so when we direct agarose gel electrophoresis it moves towards the ANODE as it is a contrary charge molecule, so because of this distinctive DNA pieces are framed dependent on MOLECULAR WEIGHT, because of this separation was not as many works.

Will this reason obstructions for your examination?

Due to EtBr, we can't get the exact yield. in spite of the fact that we are not utilizing DNA PROBES, there is less opportunity to get TARGET DNA.

Impacts OF EtBr:

EtBr goes about as interpolating operator, EtBr is mutagenic so the investigation must be wary when taking care of it.

the disservice of utilizing EtBr is the danger of harm to the DNA because of the transformations caused by ultra rough beams which are useful for vusualization

so at long last by this, the ligation procedure gets an opportunity to come up short.