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Re: (feathers not scales)



> If I read you correctly, and I may not, you're assuming that feathers came
> from scales.
> Quoting Alan Brush from a Dec 8, 1995 post, feathers are a novelty:
>
> <This group of proteins (refered to a 'feather'-proteins), are unlike the
> alpha-proteins that make the skin, hair, mammalian and reptilian scales,
in
> their primary sequence, genic structure, and the ways in which they
interact
> to form the filaments that produce the final structure.
> IMHO the reticullate scales of birds represent the reptilian legacy. The
> feathers and related structures in birds are different enough at enough
> levels to be considered an evolutionary novelity.>
>
> Has something been found since to change this view?

The prevailing view seems still to be that feathers are modified scales.
They need not be, however, for Reichholf's hypothesis. Hairs seem to be
derived from strange cogs between scales (I remember to have read that
monotremes have scale remnants between their hairs), so maybe feathers are
also.