system
Given the following post, respond as if you're commenting on Reddit:
human
If we applied the same selective breeding to humans, that we use for dogs,  for 10 000 years or more, could we achieve comparable variety of shape and sizes while keeping them as one species?
gpt
Yes, but possibly not to the same extent that dogs do. Its believed that humans went through a genetic bottleneck resulting a major decrease in genetic diversity when we left Africa so we might have less to work with. But you could definitely amplify pre-existing traits to the point that there would be clear "breeds".