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Re: organic conversations

Owen (1834) defined homology as "the same organ under every variety of form and function". [...] Thus, any definition of homology that has an evolutionary component (including 'shared ancestry', which is its current usage) is a re-invention from Owen's original concept.

That strikes me as exaggerated. It's just an explanation of what on the planet "the same organ" _means_. :-)

Molecular biologists recognize that certain genes or proteins have a common ancestry, just as organismal biologists recognize that certain organs or appendages have a common ancestry.

Yes. They just shouldn't say "% homologous" when they mean "% identical". That's all.