[Neo Velociti]

Neo Velociti  asked the Naked Scientists:
   
Does bacterial flagellum really exist?  If so what is the science behind it? Can it challenge Darwin's Theory Of Evolution?

Neo from Johannesburg, South Africa

What do you think?

[Nizzle]

Yes it really exists, it's a chemically driven motor. It does not challenge Darwin's theory since the flagellum itself also evolved from a very simple model to the more sophisticated form as a part of the bacterium system, much like how our feet have evolved from "grabbing limbs" to "running limbs" when we started walking upright and stopped climbing trees so much.

Random adaptations to changing environmental factors occurred in numerous archaea/bacteria and the one that worked best survived.
For this one specific flagellum blueprint we see today in bacteria, an uncountable amount of variations have also existed but were not up to the job