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Re: Species concepts



From: "T. Michael Keesey" <mightyodinn@yahoo.com>
Reply-To: mightyodinn@yahoo.com
To: Mailing List - Dinosaur <dinosaur@usc.edu>
Subject: Re: Species concepts
Date: Wed, 17 Mar 2004 16:18:35 -0800 (PST)

--- Brad McFeeters <archosauromorph2@hotmail.com> wrote:
> Has anyone introduced a system similar to the following?
>
> Fertile offspring = same species
> Infertile offspring = different species of same genus
> No offspring = different genera
>
> I don't know how much it would alter existing classifications, but having
> some objective definition of genera would be good.


The problem here is: suppose A can breed with B, and B can breed with C, but A
cannot breed with C. Is B in the same species as A or C?


(Not to mention the inapplicability to asexual organisms.)

Sure, but those are problems with the Biological Species Concept in any form, not just of the "Biological Genus Concept".


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