How is DNA transferred into a nylon membrane?

DNA is transferred to a nylon membrane through a process called Southern blotting. After electrophoresis separates the DNA fragments by size, the gel is placed in contact with the nylon membrane. An electric current is then applied, which causes the negatively charged DNA to migrate from the gel onto the membrane, where it becomes immobilized. This allows for further analysis, such as hybridization with specific probes.