Jacoby wrote:
"The one drop rule" works the other way, thats why Obama who was raised by his white mom and grandparents going to elite schools in Hawaii is considered to be black. I imagine I probably had quite a bit more exposure to African American culture than Obama did during his childhood, it really wasn't until Barack was in college and left Hawaii that he started really identifying as black. The one drop rule really is an ugly cultural artifact of this country, it won't leave people's minds even now even benevolently. Someone that isn't 100% lily white isn't thought of as white at all in this country, I know foreigners are always pretty amused at how Americans identify as like 1/32 something but I imagine this idea of the one drop rule is what gave it relevance.
And yet you could have a black great great great grandmother and still have blond, straight-as-a-board hair, and blue eyes. No one would ever guess. All it takes is a few generations of grandparents marrying and procreating with partners that look like themselves and it buries all the genes from further back. So I don't know how the "one drop" rule applies.
At one point the genes might creep up but the odds are greater they won't. They will just stay recessive until paired with genes like themselves. They could present a little but it would be subtle, as in the shape of the nose or body. Hair could be wavy.