I recently asked a friend of mine what he thought the definiton of biblical kind was, and how to determine if two organisms were in the same kind. He replied that if two organisms can reproduce they are in the same kind. What I want to discuss is how good a defintion this really is.
The most likely problem I can see to this definition is the situation with three (or more, but i'll use three in this example) organisms, lets name them A, B and C. If A can breed with B, B can breed with C, but C cannot breed with A. If this were true then there would be no unique "kind", and species would be in many kinds at once. Does anyone have an example of species that fit this situation?
Alternatively, are there any other problems to using this as a definition of kind?
(Added in edit)This doesn't just have to be an attack on reproductive viablity as a definition of "kind". If any creationists want to defend this definition i'd like to hear that side of it too.
This message has been edited by happy_atheist, 10-28-2004 08:18 AM