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Re: Evolutionary Theory (convergence is not inevitable)
On Thu, 19 Feb 1998, Bill Adlam wrote:
> Lenses aren't found in all eyes: Nautilus uses pinholes, scallops use
> mirrors. (Obviously photoreceptors are a must.) Compound eyes give much
> less acuity than simple eyes for a medium-sized animal, but most arthropods
> are stuck with them.
This is well-taken. I should say there is a _limited_ set of solutions
which organisms approach based on their current body plan. But this is
still quasi-directe