1.2K views · 21 reactions | All 50 episodes of the *NEW* Crash Course Biology series are now available on YouTube!  Take a journey through life’s vast interconnectedness and discover how evolution, genetics, ecology, and cell and organismal biology deepen our knowledge of every living thing: including YOU! https://www.youtube.com/playlist?list=PL8dPuuaLjXtPW_ofbxdHNciuLoTRLPMgB | CrashCourse | Facebook

The little lives our cells lead follow a pattern called the cell cycle. Just like how an organism grows, develops, perhaps reproduces, and then dies, our cells do the same. They are growing, developing, and many of them are dividing to make more cells with identical copies of our DNA to replace the old ones. https://youtu.be/skPOXcVvS5c | CrashCourse | Facebook