Here's the thing... traits some in collections. Mongoloid or African American are words that describe a collection of physical traits.
Black people will have darker skin AND frizzy hair. Asians have asian eyes AND black hair. This is proof that traits are inherited in collective groups.
You are stating by certain magic these collections of physical traits that describe an asian or a caucasian magically only correlate with other physical traits. So in a sense, for asians: Black hair correlates with asian eyes but these traits can absolutely never ever correlate with anything related to intelligence and behavior.
What is the mechanism in genetics that deliberately demarcates physical traits from behavioral traits? What causes social traits to be totally random while physical traits come correlated with one another? I think it is more logical to conclude that there is no mechanism that does this.
Please note that I am well versed in the theory you present. It is often used as a scientific basis for racial equality. I agree with the intent of the theory but I disagree with it as a practical truth. Life is just unfair. Anyway, the theory does address a valid point but here's why I think it's wrong:
I think searching for genetic markers at the molecular level doesn't yield results because behavioral and physical traits are abstractions on top of DNA.
Imagine two programs, one written in C++, the other in Haskell. Both programs have the same behavior... let's say they both return the derivative of an expression. If you analyze the source code for correlations without completely understanding it (largely the way we analyze DNA today) you will find that the languages are completely uncorrelated. Both are totally different in style, structure and syntax. This occurs even though the surface behavior (finding the derivative of an expression) is exactly identical. This is what I believe is happening with the DNA. You cannot find correlations with race because the correlations only occur at a higher level of abstraction not in the source code.