Simply show an organism where a gene duplication or regulatory mutation did not produce a 'freak'. We can discuss fitness 'advantages' from there.
Should be relatively simple, if evolution is true.
Nice try.
I joined this conversation because you made the specific claim that a duplication or change in regulation of "leg development" genes will result in a "freak," and that this has been observed.
Do you have a specific example of this or do you not?
Do you have a logical biochemical argument for this or do you not?
Can you clearly define which genes are included in the family of "leg development genes?"
Can you clearly define as it pertains to ecology the term "freak?"
Are you avoiding specific answers to my questions because it is far easier to weasel out of ignorant generalizations and subjective nonsense, as opposed to actually discussing science?