> One of evolutionary biology's greatest challenges is deciphering the origins
> of complex structures. Now, scientists have unraveled the steps in the
> evolution of the bacterial flagellum, a tiny, whiplike structure used in
> swimming and host invasion. A new study shows the flagellum is the result
> of successive duplications of a single gene in the ancestor of today's
> bacteria, a finding that not only answers an important question about the
> evolution of complex structures but also provides additional ammunition to
> counter arguments from evolution's foes.
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> Read it at http://sciencenow.sciencemag.org/cgi/content/full/2007/417/3

> J. Spaceman