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Re: why larger?
In a message dated 97-02-20 12:10:47 EST, email@example.com (Jonathan R.
<< It's been a while, but the model of speciation (ie. biological
model) which I remember involves:
1) reproductive isolation for an extended period
2) selection pressure for change in the phenotype >>
What you are describing here are circumstances that, every so often, >lead
to< a "speciation event." You have not described the >event< itself. How, for
example, would one determine that a >new species< has been created that was
not there prior to the event?