When a cell divides, it has to make sure each new cell gets an exact copy of the cell's DNA. It does this using a process called mitosis -- watch to learn more.
This video is part of the Bio-Dictionary for "The Explorer's Guide to Biology" (XBio for short), which is a bold re-imagining of the biology textbook for the 21st century. Visit explorebiology.org for free content that focuses on stories of scientific discovery.
