That some how you try to imply this constitutes a new species, makes you a moron.
Who are you talking to? What do you gain by having an imaginary conversation with someone that you're pretending has said something that nobody said?
All domestic dogs are the same species. Just like all humans. But let me guess: you aren't willing to refer to Standard Poodles, or Chihuahuas, or English Pointers as breeds, right?
Well let's ignore the fact that Mongolia, Russia, and Ethiopia are places, not races.
Why ignore that? I chose those specifically because - despite the serious melting-pot stuff of the last 100+ years or so - those PLACES have also been home to readily identifiable large groups of people who share very obvious genetic traits.
Race is a social term used to generalize the ancestry of a person. It's to vague to make a prediction about the genes, and their expression, in a particular person.
But, inconveniently, it's also a perfectly reasonable way to look at a large group and say, "Wow, that group of several million people sure do have a LOT in common, genetically."
I think most of know cases similar to the family with 3 brown hair and eyed kids, and 1 with blonde hair and blue eyes.
Yes, just like most know cases similar to the family with 3 smart kids and 1 much less smart one.
As soon as you come up with a heritable definition for race you can start on your analysis of heritable differences in relation to race.
How about: reasonable people of normal intelligence can readily observe the inheritance of broad classes of physically obvious traits - related to skeletal and muscle structure, pigmentation, hair formation, disease susceptibility, and so on - that plainly manifest themselves in large groups of people that have developed together and have tended to breed amongst themselves.
That you try so hard to proclaim that such obvious things are not real makes you sound like, well, a total tool.
So which differences in skin tone, height, and facial features uniquely define the races
Who says it has to be distinct, unique enough perfect compartmentalization enough to put people entirely, precisely in one box of the next?
But are you REALLY pretending that you can't immediately spot some people as being obviously of Mongolian, or Russian, or Ethiopian extraction? I can spot people of Scandinavian heritage a mile away, and can readily see the differences between people carrying DNA from the Andes vs. DNA from the jungles of Central America. Why are you trying so hard to pretend those differences are plainly obvious? What do you gain, other than street cred with the willfully obtuse politically correct set?
You should probably read up a little more on how hypothesis formation works. You can either base it on experiment, or you can base it on, say, what math says should be there.
But it's just hypothetical until it is shown to conform to reality with a certain degree of certainty.
I tell them to turn to the study of mathematics, for it is only there that they might escape the lusts of the flesh. -- Thomas Mann, "The Magic Mountain"