alt Hacker NewsIs there any species, other than humans, that is found all across the globe (i.e. geographically separated), and has not differentiated into subspecies? Wolves, elephants, tigers, bears, and foxes have all been categorized into multiple subspecies each, distinct but able to interbreed.
Replies
erichocean • today at 12:47 AM
Humans have, obviously. Just interbreeding with ancient species was enough to do it, even without separate evolution.
The definition of what constitutes a species is a human construct.
Two bird populations living in the same locale but divided by a mountain range therefore not naturally breeding with each other would classify as a different species, even if they could breed with each other.
So your question is hard to answer.