This model based on a wealth of evidence shows that the flagellum could evolve. Since 2003 many experiments have confirmed what initially were only predictions or weak assumptions. Still, many fine details remain to be worked out regarding function, not origin. For example, how does the ATP synthase derived components impart the motion of active transport, or how does the Tol-Pal derived components actually spine the flagellum.
Duration: 4m 58s