Creationists, who are career biologists, are in complete agreement! Of course speciation happens this way!
All we say is that the observed life on earth is due to this gradual process acting on populations of created kinds. Nothing more, nothing less.
The process you are describing did not necessarily lead to the origin of brains from no brain, immune systems from no immune system etc. You believe it did, we believe God created these things and then let them rip*.
* 'Let them rip' may be Australian slang (?) - it means 'let them go and do what they're supposed to do'.
[This message has been edited by Tranquility Base, 09-15-2002]