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
Answered by Holly D. Biology tutor

4925 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Describe the process of transcription in detail (6 marks)


How are Xerophytes adapted to dry environments?


Explain how 2 different types of mutations in a gene can result in the loss of an enzyme's function


What is speciation?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences