nCilia or flagella, missing any single part will not
bend, they are thus irreducibly complex
nParts having functions
enhancing fitness independent of a role in locomotion, after developing some functionality,
could evolve via random
change and natural selection
nMicrotubuals are an
important part of the cytoskeleton of all eukaryotic cells, thus they could evolve
independently
nNo other protein
components of cilia and flagella have known functions independent of their role in movement
nThus, all proteins, other
than tubulin in microtubuals, would have
to spontaneously come into existence simultaneously if they were to increase fitness and be selected.
nThat seems like a big
jump!