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Why would other bands be present in gel electrophoresis if they are not supposed to be present?
SachaJimenez
This answer assumes that prior to the electrophoresis, you have applied a restriction enzyme to the DNA which breaks it up into fragments of different lengths.
Electrophoresis separates fragments of DNA according to their molecular mass, size and charge. Each band will represent a pool of fragments that are the same length. The shortest, lightest fragments will travel the furthest through the gel, where as the long, heavy fragments will not travel very far. The darkness of the band also indicates the frequency of that particular length fragment.
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoAgarose is used to separate DNA because it has a neutral charge and low chemical complexity - meaning it is unlikely to react with biomolecules. It is also an easily cast and handled matrix. Plus, samples are very easy to recover when you use agarose gel.
Wiki User
∙ 14y agoExtra bands are sometimes seen due to the following reasons:
- Sample fragmentation
- Contamination
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What is the reason for not getting DNA bands after electrophoresis?
A few reasons you may not see bands on the gel after electrophoresis:DNA concentration too low. More sample has to be loadedDNA sample is contaminated with RNADNA bands are too small and have run out of the gelThe potential (voltage) applied across the gel is not strong enoughThe buffer system in which the gel is suspended is not doing its job correctly. The buffer might have to be made fresh.The electrophoresis apparatus is not in the ocrrect orientation (electrodes not connected to the right poles)Additionally, there could also be other reasons like: improper DNA extraction procedure. If you are running a gel after PCR and still do not see bands, look into whether the DNA is being amplified correctly. See if you are using the correct primers.There are several factors that influence the electrophoresis technique. A close examination of the results obtained will help you make decisions about your future experimental approach.
Process that restriction fragments of DNA are separated from each other by the use of electricity?
The process is referred to as gel electrophoresis. This is an analytical process where DNA fragments can be separated based on size within a gel under the influence of an electric field
What is the main difference between protein electrophoresis and nucleic acid electrophoresis?
There are many similarities and differences between protein and DNA electrophoresis.Similarities:PAGE protein and DNA electrophoresis both cause separation by size, creating bands that are viewed by the scientist or a machine. The smallest segments more the fastest due to less friction with the surface of their medium or equipment.The movement of charges through the medium is what causes the DNA or proteins to move. Electrons move from the negative to positive end of the gel or capillary tube.Differences:In PAGE protein electrophoresis, a polyacrylamide gel is used to prevent convection from altering the movement of the proteins. If the proteins are charged, and there is a worry that the charge will affect the mobility of the protein segments, 1% SDS can be added to get rid of the mass/charge issue. This way, only the mass of the segment determines how far it moves. In DNA capillary electrophoresis, the size of the capillary is so small that it does not have room for convection to occur (it is only 20-50 microns wide). Thus, there is no medium in the capillary but DNA itself.In protein electrophoresis, the proteins are often dyed so their movement can be viewed with the naked eye, or a machine. With DNA capillary electrophoresis, DNA strands are made through DNA replication with dNTPs that are fluorescently labeled for the different nucleotides. Each base is labeled a different color. A fine laser lights up the DNA strand in the capillary tube and reads what color fluoresces. This is how the nucleotide is identified.Protein PAGE electrophoresis is used to determine the purity of a protein sample. It can also be used to see how large the chains are that make up a multi-chain protein if a denaturing agent is added. DNA electrophoresis is used to get the order of nucleotides in a DNA sequence. It is done by chopping the DNA sequence into many smaller bits and sequencing them, then putting them back together by lining them up according to sequence overlaps. This is called the "shotgun" method. Protein electrophoresis can figure out the order of about 15-20 amino acids by a similar method, but DNA electrophoresis can get up to 1000 nucleotides (~300 amino acids). DNA electrophoresis is limited by the low probability that the DNA sequence would be cut into a segment greater than 1000 nucleotides.
What are animal rubber bands?
they are rubber bands.. but when you take them off they take a form of an animal!!!!!!!
How are Saturn's bands different form Jupiter's?
Beacuse it is very different form each other so it cause an effect then it makes bands.
Which bands played at the concert in Florida that Ozzy was supposed to perform when Randy Rhodes was killed?
That was my first concert. The line up was supposed to be Ozzy, Foreigner, and UFO. Pat Travers played instead of Ozzy, and the other two bands played as scheduled.
What is the reason for not getting DNA bands after electrophoresis?
A few reasons you may not see bands on the gel after electrophoresis:DNA concentration too low. More sample has to be loadedDNA sample is contaminated with RNADNA bands are too small and have run out of the gelThe potential (voltage) applied across the gel is not strong enoughThe buffer system in which the gel is suspended is not doing its job correctly. The buffer might have to be made fresh.The electrophoresis apparatus is not in the ocrrect orientation (electrodes not connected to the right poles)Additionally, there could also be other reasons like: improper DNA extraction procedure. If you are running a gel after PCR and still do not see bands, look into whether the DNA is being amplified correctly. See if you are using the correct primers.There are several factors that influence the electrophoresis technique. A close examination of the results obtained will help you make decisions about your future experimental approach.
Who was the warm-up band that was supposed to play with u2 at the red rocks concert in June 1983?
I believe there was 2 bands. One of them was The Alarm. I am not sure of the other.
Process that restriction fragments of DNA are separated from each other by the use of electricity?
The process is referred to as gel electrophoresis. This is an analytical process where DNA fragments can be separated based on size within a gel under the influence of an electric field
Can you make loom bracelets with regular bands?
well yes you can I make them with hair bands and other bands
How would the reversal of polarity effect electrophoresis?
Electrophoresis is the motion of particles relative to some fluid influenced by an electric field. The voltage used will affect this electric field, and in turn affect the movement of particles.
How do you used bands in a sentence?
Both bands were challenging each other.
What is the main difference between protein electrophoresis and nucleic acid electrophoresis?
There are many similarities and differences between protein and DNA electrophoresis.Similarities:PAGE protein and DNA electrophoresis both cause separation by size, creating bands that are viewed by the scientist or a machine. The smallest segments more the fastest due to less friction with the surface of their medium or equipment.The movement of charges through the medium is what causes the DNA or proteins to move. Electrons move from the negative to positive end of the gel or capillary tube.Differences:In PAGE protein electrophoresis, a polyacrylamide gel is used to prevent convection from altering the movement of the proteins. If the proteins are charged, and there is a worry that the charge will affect the mobility of the protein segments, 1% SDS can be added to get rid of the mass/charge issue. This way, only the mass of the segment determines how far it moves. In DNA capillary electrophoresis, the size of the capillary is so small that it does not have room for convection to occur (it is only 20-50 microns wide). Thus, there is no medium in the capillary but DNA itself.In protein electrophoresis, the proteins are often dyed so their movement can be viewed with the naked eye, or a machine. With DNA capillary electrophoresis, DNA strands are made through DNA replication with dNTPs that are fluorescently labeled for the different nucleotides. Each base is labeled a different color. A fine laser lights up the DNA strand in the capillary tube and reads what color fluoresces. This is how the nucleotide is identified.Protein PAGE electrophoresis is used to determine the purity of a protein sample. It can also be used to see how large the chains are that make up a multi-chain protein if a denaturing agent is added. DNA electrophoresis is used to get the order of nucleotides in a DNA sequence. It is done by chopping the DNA sequence into many smaller bits and sequencing them, then putting them back together by lining them up according to sequence overlaps. This is called the "shotgun" method. Protein electrophoresis can figure out the order of about 15-20 amino acids by a similar method, but DNA electrophoresis can get up to 1000 nucleotides (~300 amino acids). DNA electrophoresis is limited by the low probability that the DNA sequence would be cut into a segment greater than 1000 nucleotides.
Function of agarose in agarose gel electrophoresis?
Agarose is used in gel electrophoresis to separate nucleic acids (like DNA) by size, charge an other physical properties. Gel electrophoresis uses an electrical current to make particles move. For example, DNA is negative, so it'll travel towards to positive electrode of the gel box. Agarose has small pores through which a DNA can travel. Bigger fragments of DNA travel shorter distances, because it takes longer for them to navigate through the pores of the agarose gel. Identically sized pieces of DNA will travel the same distance, which is why you get bands (DNA with loading dye) after you run a a gel.
Properties of DNA fragments which allow them to be separated from each other during gel electrophoresis?
They are negatively charged and are of different sizes
Does the flute play in other essemble bands?
Yes, the flute can be included in concert bands, jazz bands, and small ensemble groups. Concert bands are most popular, but they are also quite popular in jazz ensembles.
How many songs and what are they has Alice Cooper sang cameos in for other bands?
They have sang about 127 cameos forother bands
