There isn’t a single example of biological/physiological/genetic variation between humans that is wide enough to assert that the natural habitat of homo sapiens has changed as a result of our migration out of Africa.
First of all, the “out of Africa” theory is well on its way out. Human evolution is far more complex then first imagined. A quick Google search yielded these results:
A quote from the NY Post article:
Scientists say the species, which is known only from a lower jawbone and a single tooth, may prove that modern man originated in Europe and not Africa.
But back to your comment.
DNA testing is getting better all the time but since humans are all basically the same, it’s incredibly difficult to nail things down into the specifics that you seem to want. How much genetic commonality would be required for your utopian groupings of like-looking-people into nations from whence their ancestors came?
First of all, your statement that humans are basically the same is patently false, even by your own admission. Appearance reveals much about a person’s genetics, and even though we are 99.99% similar, that .01% has made a huge difference. One only has to look at the accomplishments of differing races and ethnicities to see this.
And now there’s this new hiccup to your “we’re all the same theory”: that racial differences can be seen in the brain. MRI scans of the brains of people of different races can be used with near certainty to identify that person’s race.
So race exists. And people identify with their race. It’s what makes — or breaks — civilizations.
The genetic differences between humans are on a gradient. I just don’t think that your idea makes sense because it can be poked full of holes from every angle.
On a gradient? Only because to you 0.01% is seemingly inconsequential. We may all be similar in terms of being human but race and ethnicity are huge components of the whole picture.
Cultures and civilizations are the result of the people who comprise a nation, that nation’s ethnic/genetic identity. Genetic trace ad-mixture can destroy a nation. Why do you think Eastern Europe and Southern Europe haven’t been as successful as Western Europe and Scandinavia?
If we are all so similar, then the rest of the world would have accomplished roughly the same things and would understand the world in much the same way, and yet that’s not how things are.
Senegal is no Great Britain, but Ireland is also no England. That 0.01% is quite the bugbear.
