I read recently that Isolated human populations are the ones most likely to produce significant changes in the genome. In addition, as humans continue to have mutli-Ethnic children, the chances for any significant Evolution of the species is hindered. The article also said that the first humans on isolated colonies on Mars or on the Moon will produce variation or significant mutation. HOW is this so? I always thought that the intermixing of different Ethnicities would INCREASE the chances of Evolution. can someone: scilosopher paulsamuel IamaHampster please explain Isolation?