Biotechnology Basics: SDS Polyacrylamide-Gel Electrophoresis

What is SDS-PAGE? SDS polyacrylamide-gel electrophoresis, or SDS-PAGE, is a technique that is used to separate proteins according to their molecular weight.  What do I need to separate proteins?  In addition to your protein sample, you will need:  Sodium Dodecyl…

Five Ways to Improve Your Transformation Experiments

Transformation is the process through which bacteria can pick up foreign DNA from the surrounding environment. The newly acquired genetic information is both stable and heritable. In the laboratory, we can transform bacteria with small, circular pieces of DNA called…

Biotech Basics – Visualizing DNA

What is agarose gel electrophoresis? Electrophoresis is a technique that allows us to separate DNA, RNA or proteins into bands according to their size.  For more information about this technique, be sure to check out our previous post describing electrophoresis.…

Fiber Evidence from Crime Scene Investigations

Criminal investigations have been used for centuries in an effort to fight crime. The techniques used have evolved over the years, and the field of forensic science can now solve more crimes than ever before. Modern forensics labs utilize cutting…