Re: Species concepts

["T. Michael Keesey" <mightyodinn@yahoo.com>]

--- 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.)


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