Halle's father was biracial - white & black - and her mother was white. That means she had 3 white grandparents and 1 black grandparent. This means she is black?
"3 white grandparents and 1 black grandparent. This means she is black?"
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Only if it works to your advantage, such as being selected for undeserved awards by a bunch of liberal panty-waists.
If you saw her on the street, not knowing who she was, would you say she was black or white? The term "biracial" is relatively new, before that anyone with any visible black ancestry was considered black period.
Yes, ma'am.
Africans would have another opinion, but in America, she's black. Here, partial dominance is total dominance. Some black nationalists "back in the day" would consider her black but contaminated, whereas the upper crust of black society were light-skinned like her and would have accepted her and put down her detractors in the black community. In Jamaica, as a quadroon she'd be close to having her grandchildren become "statutory whites", if both she and her daughters and sons married white people. (The joker in the deck: was her one black grandparent 100% African by ancestry? How would you tell?)
The "one drop rule" is pretty much a Klan thing (a drop of blood is depicted at the crux of the crosses on their badges, and on their flag, which looks like an Austrian or Canadian flag with a device in the center); people with some black ancestry have always "passed", but it's usually been a subject of whispering and scandal in both communities.
All of the above said, it's been Spanish-speaking societies that have been the real parsers of genetic inheritance -- they gave us the word "quadroon", by way of New Orleans and the French-speaking islands -- and Spanish features literally dozens of words to reflect different admixtures of this or that ethnicity among the three major groups present in the New World: black, white, and Indian. Words familiar to us from other context were actually ethnic identifiers: cholo, cimarron, ladino, negro fino, tresalvo (same thing as cuarteron, which is our "quadroon", also called morisco), prieto, criollo, coyote, lobo, chino, mestizo, zambo, mulato, albino, and many more exotic admixtures were defined and used in baptismal documents to fix patrimony and a person's place in society. Which, by the way, was different in the social realm from what it was in the legal realm.