[CarolinaGuitarman]

"Somebody may show up to correct me on this, but from what I've gathered, microevolution involves shifting around of existing genes and changes in gene expression, as is the case with animal breeding; whereas macroevolution involves actual genetic mutations."


Actual gene mutations occur all the time. Most are neutral; a few are helpful and a few are bad. Most of the bad ones result in an organism that never gets born. There is no difference in the process of *microevolution* and *macroevolution* at the gene level.

[inquest]

So when a new breeds of dog are bred, this is all the result of mutations, not changes in gene expression? How is it that domesticated dogs of nearly all breeds will revert back to a single form in a relatively short period of time when released into the wild?