I've read his theories. The downside to his work is that it only comprehends female DNA. (..And a couple other thing I already forgot.)
the caucasins from europe, which was the main home of the neandrethals have big noses (eg Roman nose), whereas the mongoloids and negroids have sort of small or flattened, 'pug' noses.
considering my dim memories of my early 20's, I am certain, if the europeans had discovered the wonders of the fermentation of grapes, they would certainly have mixed 'species'.