I have a friend who is "full blooded Sicilian", stands 6 foot+ tall with grey blue eyes... which means he has ancestors of every nationality or most at least.. lol

as an anniversary gift, he & his wife were given genome testing which had interesting results. Besides the expected Mediterranean genes, he has Norwegian & German heritage... no big surprise to those of us who have read our history... LOL he remarked about how his grandmother would refer to certain areas of Sicily by ethnic groups and it was likely left over from the various occupations of the island over the years.

Our gene pools can be pretty diverse, so how can one size fit all?