paraphyly

[Curtis Clark]

At 02:46 PM 6/12/97 -0500, Thomas G. Lammers wrote:
>Exactly!  "Budding off" of peripheral isolates is extremely common mode of
>allopatric speciation.  When it happens, a formerly monophyletic species
>becomes paraphyletic.

Yes, but few would argue that the monocots arose as a peripheral isolate of
the basal angiosperm species, or that the birds were a peripheral isolate
of the first dinosaur.


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Curtis Clark                       http://www.is.csupomona.edu/~jcclark/
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