Re: Snake venom has new origins.

[David Marjanovic <david.marjanovic@gmx.at>]

> > A gene got expressed in a wrong place... that's a mutation... then came
> > selection... :-)
>
> My thoughts exactly, though I was under the impression that 
> venom-producing
> tissue was derived from enamel-producing pits along the snakes' jaws. That
> got me doubting that the gland venom was itself a derived salival gland,
> though on hindsight the enamel-producing tissue could have been expressed 
> or
> migrated elsewere during development.

The discovery here is not about where the _tissue_ comes from. It is that a 
totally different part of the animal than before now expresses a certain 
gene.