Woyzeck
Senior Member
- May 30, 2010
- 1,501
- 225
This is true as long as there is new information entering the gene pool. When a species get''s isolated that is how you wind up with a breed. The reason is over time information = traits get bred out of them that is why you see some over time are incompatible to breed back in the family.
That is why a horse and a donkey produces a mule, but that mule is as far as it will go. I have never heard of a mule being fertile unless it can only breed with either the horse or the donkey only.
Information can enter and exit a gene pool. It simply cannot only exit.
And now we're going from finches back to cross-breeding again. You still haven't tied this in with the finches we were originally discussing or given me more information to give you a better and well-informed answer.
That is true,and i am saying that new information comes through cross breeding and an animal adapting to it's enviornment.
Except an organism "adapting" to it's environment is not quite like getting used to sailing on a ship (because you get sea sick) or moving to a high altitude and getting used to the amount of air and such there.