How does gel electrophoresis seperate DNA?
The DNA from PCR is placed into wells of agarose gel and a buffer solution is poured over it. An electrical current is passed through the gel due to the conduction of the buffer solution. The DNA fragments move towards the positive elctrode because they are negatively charged. Shorter DNA fragments travel further through the gel as they move faster, seperating the DNA by its length.
HD
Related Biology A Level answers
All answers ▸Describe the processes involved in the absorption of the products of starch digestion
What is saltatory conduction?
Excessive dopamine causes schizophrenia. A drug used to treat schizophrenia binds to dopamine receptors in synapses. This binding does not lead to Action potentials. How can the drug used to treat schizophrenia bind to the same receptor as dopamine?
Sometimes, babies are born with a hole between the right and left ventricles of their heart. Why does this mean oxygenated blood cannot get around their bodies?