[bobdsmith]

Then, according to the predictive quality of the ToE, what is the mechanism that shuts off the breeding abilities between cousins?

Genetic divergance. The fact that two cousin species have diverged from a common ancestor species. Certain genetic differences will mean interbreeding impossible. This is seen in nature where very similar species cannot interbreed, or have some difficulty in interbreeding (lions and tigers for example).

[hawkaw]

Genetic divergance. The fact that two cousin species have diverged from a common ancestor species. Certain genetic differences will mean interbreeding impossible. This is seen in nature where very similar species cannot interbreed, or have some difficulty in interbreeding (lions and tigers for example).

I always thought that Ichneumon's post 217 on how speciation occurs was a good read when it came to understanding all of this.

[Elsie]

Genetic divergance.

Very easy to say...