Ed Rybicki (ED at molbiol.uct.ac.za) wrote:
: > Now that is life! Reflexes, understanding and/or cognition!
: Rubbish. E coli don't think worth a damn or understand anything
: except concentration gradients.
You probably know this, but its my understanding they don't even understand
gradient, just concentration. Chemotaxis involves deciding whether to pick
a new random direction or keep swimming straight, not figuring out where
the source of the attractant or repellant is, except by a sort of directed
random walk. And its certainly not intelligent since supposedly they are
attracted to phenol.
Christian A. Ross <caross at utdallas.edu>