So, you can't tell a Nigerian from a Swede from a China-man?
Yes you can tell the difference.
So what you are saying is this : A black cow and a white cow are not cows. They are different species. So only the white cow is a real cow but the black cow is something different totally.
A white man from Sweden according to you a different species than a black man from Nigeria or an Asian man from China.
So you are saying that there is no single human race ?
There are just different races which just happen to look little bit alike. And a black German Shepherd dog is not a same race as a black-brown German Shepherd dog. A black mouse is not the same mouse as the grey mouse. Really ?
Nobody says that humans don’t have physiological variation that we use as part of the definition for race that is often rooted in geographical regions. But race is not an absolute, like height, or weight, that can be measured or scientifically defined in humans. That’s the score, and it ain’t changing.
There is no resistance to accept race as a biological concept. The point is there is no scientific proof for it. Full stop. Many scientists worked really hard on finding working definition of race as a biological fact.
They all failed.
Every last one of them now matter what their scientific credentials were.
They all failed not because genetic differences can’t be observed between various humans (after all, if there weren’t mDNA differences, we wouldn’t know much about human maternal ancestry).
They all failed because genetic differences do not support social races, races that divide people into (pardon my words) “black”, “white”, “yellow” and “red”.
However, the fact that is truly remarkable in all of this is how keen certain people are on proving the biological validity. Or to see it proven.
All that effort would be much better invested in research for genetically based disorders.