That's B.S. (BTW, it's also literally Naziesque. That each culture is associated with a specific tribe or ethnicity -- and that "blood" determines culture -- was the PRIMARY presupposition of Nazi ideology. See, for instance, Alfred Rosenberg's The Myth of the Twentieth Century. Without jumping to conclusions, I'm advising other freepers to keep a close eye on your rhetoric, RobbyS.)
According to your homepage you're a Texan, and therefore an American. Your own culture -- the American culture -- is the creation of hundreds, if not thousands, of tribes. Even Texas culture is a rich amalgam contributed to by many tribes (e.g. ethnic Germans, Hispanics, and whoever it was that developed barbecue).
Heck you can even go back thousands of years to, for instance, Rome, and find a multi-tribal origin of it's culture -- Etruscan and Latin -- and later deep incorporation of cultural elements from many others from Greeks (Greek culture itself also being multi-tribal) to Germans.
You have accidentally hit rhe nub of the matter. Sociobiology is hated because it raises questions asssociated with Nazism. But Nazism did not come from nowhere. It was a bastard child of Darwinism, because Darwinism was quickly appropriated by those looking for a scientific vehicle that could carry the notion that some human groups were naturally inferior to others.
In a society such as ours with a faith in egalitarianism, that is a dangerous notion, and for that reason sociobiology is unwelcome. It weighs heavily on the soul of anything who ascribes to the doctrine that all men are created equal.