[RightWhale]

one of the key rules of evolution - that complex anatomical features do not disappear and reappear over the course of time

Somebody is making up rules on the fly.

[muawiyah]

Still, that was the belief ~ that once you'd discarded some trait, you couldn't regain it. People used to believe that chicken teeth were somehow the work of the devil (or Natural Selection). Of course they didn't know about DNA and dinosaurs.

The business of turning genes on, and turning genes off is "new".

[djf]

Yup. This ain't no rule I ever heard of. Darwin himself talks about the blind cave fish that have only remnants of eyes.

[Larry Lucido]

Somebody is making up rules on the fly.

Yeah, but this one may stick.