In this educational lesson, we learn about the purpose of gel electrophoresis and how gel electrophoresis works. Gel electrophoresis in a method of separating DNA. It can be used to separate the size of DNA, RNA, and protein. You first start with a variety of different fragments of DNA all mixed together. The gel is a porous matrix like a sponge and separates the DNA based on two main things: 1) size and 2) charge. The charge on DNA is what makes it move through the gel. DNA is a negatively charged molecule, so it will move towards a positive charge.
Biology Unit 4 Study Guide: Genetics, Meiosis, DNA and Protein Synthesis. With examples and answers to help make meiosis, DNA replication, and RNA translation easy to learn!
Where does DNA transcription start and stop? In this lesson, we explain how DNA transcription works, the start and stop of transcription, and the 3 major transcription steps.
How does DNA transcription work in bacteria and prokaryotes? In this lesson, we explain how bacterial transcription works and its 3 basic steps: initiation, elongation, and termination.
What makes something living? What are the characteristics of living things? All life has a common origin, but how do we know? This lesson examines various characteristics that define life and the origin of life. Various famous scientists and their biological discoveries are also discussed.