[Dan Day]

Is there a single tangible, incontravertible example of such an intermediate gene in all of science?

Sure, thousands. You're not keeping up with the literature, are you? Here are three for you to look into:

Ohno S. (1984 Apr). Birth of a unique enzyme from an alternative reading frame of the preexisted, internally repetitious coding sequence. Proc Natl Acad Sci U S A, 81, 2421-5.

Nurminsky DI, Nurminskaya MV, De Aguiar D, and Hartl DL. (1998 Dec 10). Selective sweep of a newly evolved sperm-specific gene in Drosophila Nature, 396, 572-5.

Park IS, et al. Gain of D-alanyl-D-lactate or D-lactyl-D-alanine synthetase activities in three active-site mutants of the Escherichia coli D-alanyl-D-alanine ligase B. Biochemistry. 1996 Aug 13;35(32):10464-71.

Also, how do you explain the existence/non-existence of incomplete genes?

I'm sorry, could I have that question again in English?

[Southack]

"Ohno S. (1984 Apr). Birth of a unique enzyme from an alternative reading frame of the preexisted, internally repetitious coding sequence. Proc Natl Acad Sci U S A, 81, 2421-5."

Did Ohno actually state that the alternative reading frame was due to a natural, non-intelligent process?