@ Dr. Heinz Lycklama
Cilia and Flagella
nCilia and Flagella are examples of irreducibly complex
protein machines
nBoth cilia and flagella are found in the simplest eukaryotic organisms, single celled protists, as well as much more complex animals. Some members of the plant kingdom also have flagella
nAs complicated structures are thought to have evolved only once, evolutionary theory suggests flagella evolved in a very ancient common ancestor of modern plant and animal cells